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vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Menú principal" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Menú principal</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Menú principal</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">amaga</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navegació </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Portada" title="Visiteu la pàgina principal [z]" accesskey="z"><span>Portada</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Especial:Article_aleatori" title="Carrega una pàgina a l’atzar [x]" accesskey="x"><span>Article a l'atzar</span></a></li><li id="n-Articles-de-qualitat" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Articles_de_qualitat"><span>Articles de qualitat</span></a></li> </ul> </div> </div> <div id="p-Comunitat" class="vector-menu mw-portlet mw-portlet-Comunitat" > <div class="vector-menu-heading"> Comunitat </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-portal" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Portal" title="Sobre el projecte, què podeu fer, on trobareu les coses"><span>Portal viquipedista</span></a></li><li id="n-Agenda-d'actes" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Trobades"><span>Agenda d'actes</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Especial:Canvis_recents" title="Una llista dels canvis recents al wiki [r]" accesskey="r"><span>Canvis recents</span></a></li><li id="n-La-taverna" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:La_taverna"><span>La taverna</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Contacte"><span>Contacte</span></a></li><li id="n-Xat" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Canals_IRC"><span>Xat</span></a></li><li id="n-help" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Ajuda" title="El lloc per a saber més coses"><span>Ajuda</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Portada" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Viquipèdia" src="/static/images/mobile/copyright/wikipedia-wordmark-ca.svg" style="width: 7.5em; height: 1.4375em;"> <img class="mw-logo-tagline" alt="l'Enciclopèdia Lliure" 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class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Cerca a Viquipèdia" aria-label="Cerca a Viquipèdia" autocapitalize="sentences" title="Cerca a la Viquipèdia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Especial:Cerca"> </div> <button class="cdx-button cdx-search-input__end-button">Cerca</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Eines personals"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Aparença"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Aparença" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Aparença</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_ca.wikipedia.org&uselang=ca" class=""><span>Donatius</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Especial:Crea_compte&returnto=Trapezoide" title="Us animem a crear un compte i iniciar una sessió, encara que no és obligatori" class=""><span>Crea un compte</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Especial:Registre_i_entrada&returnto=Trapezoide" title="Us animem a registrar-vos, però no és obligatori [o]" accesskey="o" class=""><span>Inicia la sessió</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Més opcions" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Eines personals" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Eines personals</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Menú d'usuari" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_ca.wikipedia.org&uselang=ca"><span>Donatius</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Especial:Crea_compte&returnto=Trapezoide" title="Us animem a crear un compte i iniciar una sessió, encara que no és obligatori"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Crea un compte</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Especial:Registre_i_entrada&returnto=Trapezoide" title="Us animem a registrar-vos, però no és obligatori [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Inicia la sessió</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pàgines per a editors no registrats <a href="/wiki/Ajuda:Introducci%C3%B3" aria-label="Vegeu més informació sobre l'edició"><span>més informació</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Especial:Contribucions_pr%C3%B2pies" title="Una llista de les modificacions fetes des d'aquesta adreça IP [y]" accesskey="y"><span>Contribucions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Especial:Discussi%C3%B3_personal" title="Discussió sobre les edicions per aquesta adreça ip. [n]" accesskey="n"><span>Discussió per aquest IP</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Lloc"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contingut" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contingut</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">amaga</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Inici</div> </a> </li> <li id="toc-Àrea_del_trapezoide" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Àrea_del_trapezoide"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Àrea del trapezoide</span> </div> </a> <ul id="toc-Àrea_del_trapezoide-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contingut" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Commuta la taula de continguts." > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Commuta la taula de continguts.</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Trapezoide</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Vés a un article en una altra llengua. Disponible en 7 llengües" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-7" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">7 llengües</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Trapezoide" title="Trapezoide - asturià" lang="ast" hreflang="ast" data-title="Trapezoide" data-language-autonym="Asturianu" data-language-local-name="asturià" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Trapezium" title="Trapezium - anglès" lang="en" hreflang="en" data-title="Trapezium" data-language-autonym="English" data-language-local-name="anglès" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Trapezoido" title="Trapezoido - esperanto" lang="eo" hreflang="eo" data-title="Trapezoido" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Trapezoide" title="Trapezoide - espanyol" lang="es" hreflang="es" data-title="Trapezoide" data-language-autonym="Español" data-language-local-name="espanyol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Trapetsoid" title="Trapetsoid - estonià" lang="et" hreflang="et" data-title="Trapetsoid" data-language-autonym="Eesti" data-language-local-name="estonià" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Trapezoide" title="Trapezoide - basc" lang="eu" hreflang="eu" data-title="Trapezoide" data-language-autonym="Euskara" data-language-local-name="basc" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Trapezoide" title="Trapezoide - interlingua" lang="ia" hreflang="ia" data-title="Trapezoide" data-language-autonym="Interlingua" data-language-local-name="interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q963655#sitelinks-wikipedia" title="Modifica enllaços interlingües" class="wbc-editpage">Modifica els enllaços</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Espais de noms"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Trapezoide" title="Vegeu el contingut de la pàgina [c]" accesskey="c"><span>Pàgina</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Discussi%C3%B3:Trapezoide&action=edit&redlink=1" rel="discussion" class="new" title="Discussió sobre el contingut d'aquesta pàgina (encara no existeix) [t]" accesskey="t"><span>Discussió</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Canvia la variant de llengua" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">català</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Vistes"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Trapezoide"><span>Mostra</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Trapezoide&action=edit" title="Modifica el codi font d'aquesta pàgina [e]" accesskey="e"><span>Modifica</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Trapezoide&action=history" title="Versions antigues d'aquesta pàgina [h]" accesskey="h"><span>Mostra l'historial</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Eines de la pàgina"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Eines" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Eines</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Eines</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">amaga</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Més opcions" > <div class="vector-menu-heading"> Accions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Trapezoide"><span>Mostra</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Trapezoide&action=edit" title="Modifica el codi font d'aquesta pàgina [e]" accesskey="e"><span>Modifica</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Trapezoide&action=history"><span>Mostra l'historial</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Especial:Enlla%C3%A7os/Trapezoide" title="Una llista de totes les pàgines wiki que enllacen amb aquesta [j]" accesskey="j"><span>Què hi enllaça</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Especial:Seguiment/Trapezoide" rel="nofollow" title="Canvis recents a pàgines enllaçades des d'aquesta pàgina [k]" accesskey="k"><span>Canvis relacionats</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Especial:P%C3%A0gines_especials" title="Llista totes les pàgines especials [q]" accesskey="q"><span>Pàgines especials</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Trapezoide&oldid=33222259" title="Enllaç permanent a aquesta revisió de la pàgina"><span>Enllaç permanent</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Trapezoide&action=info" title="Més informació sobre aquesta pàgina"><span>Informació de la pàgina</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Especial:Citau&page=Trapezoide&id=33222259&wpFormIdentifier=titleform" title="Informació sobre com citar aquesta pàgina"><span>Citau aquest article</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Especial:UrlShortener&url=https%3A%2F%2Fca.wikipedia.org%2Fwiki%2FTrapezoide"><span>Obtén una URL abreujada</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Especial:QrCode&url=https%3A%2F%2Fca.wikipedia.org%2Fwiki%2FTrapezoide"><span>Descarrega el codi QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Imprimeix/exporta </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Especial:Llibre&bookcmd=book_creator&referer=Trapezoide"><span>Crea un llibre</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Especial:DownloadAsPdf&page=Trapezoide&action=show-download-screen"><span>Baixa com a PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Trapezoide&printable=yes" title="Versió per a impressió d'aquesta pàgina [p]" accesskey="p"><span>Versió per a impressora</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> En altres projectes </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Trapezium" hreflang="en"><span>Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q963655" title="Enllaç a l'element del repositori de dades connectat [g]" accesskey="g"><span>Element a Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Eines de la pàgina"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aparença"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Aparença</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">amaga</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">De la Viquipèdia, l'enciclopèdia lliure</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="ca" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r34261971">.mw-parser-output .hatnote{width:100%;border-color:#77ccff;color:var(--color-base,#202122);background-color:#f5f5f5;margin-bottom:1em;font-style:italic}.mw-parser-output .hatnote i{font-style:normal}@media screen{html.skin-theme-clientpref-night .mw-parser-output .hatnote{color:var(--color-inverted,#fff);background-color:var(--background-color-inverted,#101418)}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .hatnote{color:var(--color-inverted,#fff);background-color:var(--background-color-inverted,#101418)}}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style> <table class="hatnote" cellspacing="5"> <tbody><tr> <td style="width: 25px; vertical-align: top;"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/22px-Disambig_grey.svg.png" decoding="async" width="22" height="17" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/33px-Disambig_grey.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/44px-Disambig_grey.svg.png 2x" data-file-width="260" data-file-height="200" /></span></span> </td> <td>Per a altres significats, vegeu «<a href="/wiki/Trapezoide_(os)" title="Trapezoide (os)">Trapezoide (os)</a>». </td></tr></tbody></table> <table class="plainlinks ambox ambox-content" style="" data-severity="2"> <tbody><tr> <td class="mbox-image" style="width: 52px;"> <span typeof="mw:File"><a href="/wiki/Fitxer:Crystal128-pipe.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Crystal128-pipe.svg/25px-Crystal128-pipe.svg.png" decoding="async" width="25" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Crystal128-pipe.svg/38px-Crystal128-pipe.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Crystal128-pipe.svg/50px-Crystal128-pipe.svg.png 2x" data-file-width="192" data-file-height="192" /></a></span></td> <td class="mbox-text" style=""> <div class="mbox-text-span">Aquest article o secció no <a href="/wiki/Viquip%C3%A8dia:Citau_les_fonts" title="Viquipèdia:Citau les fonts">cita les fonts</a> o necessita més referències per a la seva <a href="/wiki/VP:VER" class="mw-redirect" title="VP:VER">verificabilitat</a>.</div> </td> </tr> </tbody></table> <table class="infobox" style="font-size:90%;width:25em"><caption style="font-weight:bold;background:#b0d1ad"><span style="float:left;"><span typeof="mw:File"><span title="Infotaula de polítop"><img alt="Infotaula de polítop" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Pyramid_icon.svg/22px-Pyramid_icon.svg.png" decoding="async" width="22" height="19" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Pyramid_icon.svg/33px-Pyramid_icon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Pyramid_icon.svg/44px-Pyramid_icon.svg.png 2x" data-file-width="303" data-file-height="258" /></span></span></span>Trapezoide</caption><tbody><tr><td colspan="2" class="infobox-full-data infobox-data" style="text-align:center"><span typeof="mw:File"><a href="/w/index.php?title=Fitxer:Tetragon_measures.svg&lang=ca" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Tetragon_measures.svg/langca-270px-Tetragon_measures.svg.png" decoding="async" width="270" height="300" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Tetragon_measures.svg/langca-405px-Tetragon_measures.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Tetragon_measures.svg/langca-540px-Tetragon_measures.svg.png 2x" data-file-width="324" data-file-height="360" /></a></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;background:#eeeeee">Tipus</th><td class="infobox-data"><a href="/wiki/Quadril%C3%A0ter" title="Quadrilàter">quadrilàter</a>, <a href="https://www.wikidata.org/wiki/Special:EntityPage/Q3259505" class="extiw" title="d:Special:EntityPage/Q3259505">polígon convex</a> i <a href="https://www.wikidata.org/wiki/Special:EntityPage/Q66364675" class="extiw" title="d:Special:EntityPage/Q66364675">polígon irregular</a> <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q963655?uselang=ca#P279" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr></tbody></table> <p>Un <b>trapezoide</b> és un <a href="/wiki/Quadril%C3%A0ter" title="Quadrilàter">quadrilàter</a> simple i convex no <a href="/wiki/Paral%C2%B7lelogram" title="Paral·lelogram">paral·lelogram</a>, és a dir, un <a href="/wiki/Pol%C3%ADgon" title="Polígon">polígon</a> tancat de quatre costats, cap dels quals no és <a href="/wiki/Paral%C2%B7lel" title="Paral·lel">paral·lel</a> a un dels altres. </p> <div class="mw-heading mw-heading2"><h2 id="Àrea_del_trapezoide"><span id=".C3.80rea_del_trapezoide"></span>Àrea del trapezoide</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trapezoide&action=edit&section=1" title="Modifica la secció: Àrea del trapezoide"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Com altres polígons irregulars, l'àrea del trapezoide es pot calcular subdividint-lo en <a href="/wiki/Triangle" title="Triangle">triangles</a>. </p><p>Una possibilitat és traçar una línia entre dos <a href="/wiki/V%C3%A8rtex_(geometria)" title="Vèrtex (geometria)">vèrtexs</a> oposats que en serà una de les dues <a href="/wiki/Diagonal" title="Diagonal">diagonals</a>; després traçarem dues línies <a href="/wiki/Perpendicular" class="mw-redirect" title="Perpendicular">perpendiculars</a> a la diagonal que la uneixin amb els altres dos vèrtexs, i obtindrem així quatre <a href="/wiki/Triangle" title="Triangle">triangles</a> rectangles. Ja només cal calcular les àrees d'aquests triangles i sumar-les per obtenir l'àrea total del trapezoide. </p><p>Una altra possibilitat és subdividir-lo en només dos triangles i fer servir la <a href="/wiki/F%C3%B3rmula_d%27Her%C3%B3" title="Fórmula d'Heró">fórmula d'Heró</a>; d'aquesta manera ens estalviem d'haver de traçar tantes línies a l'interior del trapezoide. L'àrea l'obtindrem aleshores a partir de les <a href="/wiki/Longitud" title="Longitud">longituds</a> dels quatre costats i de la <a href="/wiki/Diagonal" title="Diagonal">diagonal</a> que hem fet servir per subdividir-lo. Anomenant <i>a</i>, <i>b</i>, <i>c</i> i <i>d</i> la longitud dels quatre costats, <i>D</i> la de la diagonal que uneix el <a href="/wiki/V%C3%A8rtex_(geometria)" title="Vèrtex (geometria)">vèrtex</a> en què es tallen els costats corresponents a <i>a</i> i <i>c</i> i el vèrtex en què es tallen els costats corresponents a <i>b</i> i <i>d</i>, i sent <i>s</i> la semisuma (la meitat de la <a href="/wiki/Suma" title="Suma">suma</a>) de <i>a</i>, <i>b</i> i <i>D</i>, i <i>t</i> la semisuma de <i>c</i>, <i>d</i> i <i>D</i>, l'àrea del trapezoide serà aquesta: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle A={\sqrt {s(s-a)(s-b)(s-D)}}+{\sqrt {t(t-c)(t-d)(s-D)}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>A</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mi>s</mi> <mo stretchy="false">(</mo> <mi>s</mi> <mo>−</mo> <mi>a</mi> <mo stretchy="false">)</mo> <mo stretchy="false">(</mo> <mi>s</mi> <mo>−</mo> <mi>b</mi> <mo stretchy="false">)</mo> <mo stretchy="false">(</mo> <mi>s</mi> <mo>−</mo> <mi>D</mi> <mo stretchy="false">)</mo> </msqrt> </mrow> <mo>+</mo> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mi>t</mi> <mo stretchy="false">(</mo> <mi>t</mi> <mo>−</mo> <mi>c</mi> <mo stretchy="false">)</mo> <mo stretchy="false">(</mo> <mi>t</mi> <mo>−</mo> <mi>d</mi> <mo stretchy="false">)</mo> <mo stretchy="false">(</mo> <mi>s</mi> <mo>−</mo> <mi>D</mi> <mo stretchy="false">)</mo> </msqrt> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle A={\sqrt {s(s-a)(s-b)(s-D)}}+{\sqrt {t(t-c)(t-d)(s-D)}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/8738c6be559c480b230ecbe56f80077f64ff6448" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:56.497ex; height:4.843ex;" alt="{\displaystyle A={\sqrt {s(s-a)(s-b)(s-D)}}+{\sqrt {t(t-c)(t-d)(s-D)}}}"></span></dd></dl> <p><br /> Una manera equivalent a l'anterior permet de fugir de les semimisumes esmentades: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle A={\frac {1}{4}}({\sqrt {(a^{2}+b^{2}+D^{2})^{2}-2(a^{4}+b^{4}+D^{4})}}+{\sqrt {(c^{2}+d^{2}+D^{2})^{2}-2(c^{4}+d^{4}+D^{4})}})}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>A</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mn>1</mn> <mn>4</mn> </mfrac> </mrow> <mo stretchy="false">(</mo> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mo stretchy="false">(</mo> <msup> <mi>a</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mo>+</mo> <msup> <mi>b</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mo>+</mo> <msup> <mi>D</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <msup> <mo stretchy="false">)</mo> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mo>−</mo> <mn>2</mn> <mo stretchy="false">(</mo> <msup> <mi>a</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> </mrow> </msup> <mo>+</mo> <msup> <mi>b</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> </mrow> </msup> <mo>+</mo> <msup> <mi>D</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> </mrow> </msup> <mo stretchy="false">)</mo> </msqrt> </mrow> <mo>+</mo> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mo stretchy="false">(</mo> <msup> <mi>c</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mo>+</mo> <msup> <mi>d</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mo>+</mo> <msup> <mi>D</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <msup> <mo stretchy="false">)</mo> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mo>−</mo> <mn>2</mn> <mo stretchy="false">(</mo> <msup> <mi>c</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> </mrow> </msup> <mo>+</mo> <msup> <mi>d</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> </mrow> </msup> <mo>+</mo> <msup> <mi>D</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> </mrow> </msup> <mo stretchy="false">)</mo> </msqrt> </mrow> <mo stretchy="false">)</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle A={\frac {1}{4}}({\sqrt {(a^{2}+b^{2}+D^{2})^{2}-2(a^{4}+b^{4}+D^{4})}}+{\sqrt {(c^{2}+d^{2}+D^{2})^{2}-2(c^{4}+d^{4}+D^{4})}})}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/50885452afb2dcda1422e414adf406a995f950fb" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:85.464ex; height:5.176ex;" alt="{\displaystyle A={\frac {1}{4}}({\sqrt {(a^{2}+b^{2}+D^{2})^{2}-2(a^{4}+b^{4}+D^{4})}}+{\sqrt {(c^{2}+d^{2}+D^{2})^{2}-2(c^{4}+d^{4}+D^{4})}})}"></span>,</dd></dl> <p>tenint present que <i>a</i>, <i>b</i>, <i>c</i> i <i>d</i> són la longitud dels quatre costats del trapezoide i <i>D</i> és la de la diagonal que uneix el vèrtex en què es tallen els costats corresponents a <i>a</i> i <i>c</i> i el vèrtex en què es tallen els costats corresponents a <i>b</i> i <i>d</i>. </p><p><span style="display: none;" class="interProject"><a href="https://ca.wiktionary.org/wiki/trapezoide" class="extiw" title="wikt:trapezoide">Viccionari</a></span> </p> <div role="navigation" class="navbox" aria-labelledby="Polígons" style="padding:3px"><table class="nowraplinks collapsible collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div class="plainlinks hlist navbar mini"><ul><li class="nv-view"><span typeof="mw:File"><a href="/wiki/Plantilla:Pol%C3%ADgons" title="Plantilla:Polígons"><img alt="Vegeu aquesta plantilla" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/18px-Commons-emblem-notice.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/27px-Commons-emblem-notice.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/36px-Commons-emblem-notice.svg.png 2x" data-file-width="48" data-file-height="48" /></a></span></li></ul></div><div id="Polígons" style="font-size:114%;margin:0 4em"><a href="/wiki/Pol%C3%ADgon" title="Polígon">Polígons</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div id="RegularLlista"><style data-mw-deduplicate="TemplateStyles:r31792667">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><div class="hlist"><ul><li><a href="/wiki/Pol%C3%ADgon_regular" class="mw-redirect" title="Polígon regular">Regular</a></li><li><a href="/w/index.php?title=Llista_de_pol%C3%ADgons&action=edit&redlink=1" class="new" title="Llista de polígons (encara no existeix)">Llista</a></li></ul></div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">1–10 costats</th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/w/index.php?title=Mon%C3%B2gon&action=edit&redlink=1" class="new" title="Monògon (encara no existeix)">Monògon</a></li> <li><a href="/w/index.php?title=D%C3%ADgon&action=edit&redlink=1" class="new" title="Dígon (encara no existeix)">Dígon</a></li> <li><a href="/wiki/Triangle" title="Triangle">Triangle</a> <ul><li><a href="/wiki/Triangle_equil%C3%A0ter" title="Triangle equilàter">Equilàter</a></li> <li><a href="/wiki/Triangle_is%C3%B2sceles" title="Triangle isòsceles">Isòsceles</a></li></ul></li> <li><a href="/wiki/Quadril%C3%A0ter" title="Quadrilàter">Quadrilàter</a> <ul><li><a href="/wiki/Quadrat_(geometria)" class="mw-redirect" title="Quadrat (geometria)">Quadrat</a></li> <li><a href="/wiki/Rectangle" title="Rectangle">Rectangle</a></li> <li><a href="/wiki/Rombe" title="Rombe">Rombe</a></li> <li><a href="/wiki/Paral%C2%B7lelogram" title="Paral·lelogram">Paral·lelogram</a></li> <li><a href="/wiki/Trapezi" title="Trapezi">Trapezi</a></li> <li><a href="/wiki/Deltoide" title="Deltoide">Deltoide</a></li></ul></li> <li><a href="/wiki/Pent%C3%A0gon_(geometria)" title="Pentàgon (geometria)">Pentàgon</a></li> <li><a href="/wiki/Hex%C3%A0gon" title="Hexàgon">Hexàgon</a></li> <li><a href="/wiki/Hept%C3%A0gon" title="Heptàgon">Heptàgon</a></li> <li><a href="/wiki/Oct%C3%A0gon" title="Octàgon">Octàgon</a></li> <li><a href="/wiki/Enne%C3%A0gon" title="Enneàgon">Enneàgon</a></li> <li><a href="/wiki/Dec%C3%A0gon" title="Decàgon">Decàgon</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">11–20 costats</th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Hendec%C3%A0gon" title="Hendecàgon">Hendecàgon</a></li> <li><a href="/wiki/Dodec%C3%A0gon" title="Dodecàgon">Dodecàgon</a></li> <li><a href="/wiki/Tridec%C3%A0gon" title="Tridecàgon">Tridecàgon</a></li> <li><a href="/w/index.php?title=Tetradec%C3%A0gon&action=edit&redlink=1" class="new" title="Tetradecàgon (encara no existeix)">Tetradecàgon</a></li> <li><a href="/wiki/Pentadec%C3%A0gon" title="Pentadecàgon">Pentadecàgon</a></li> <li><a href="/wiki/Hexadec%C3%A0gon" title="Hexadecàgon">Hexadecàgon</a></li> <li><a href="/wiki/Heptadec%C3%A0gon" title="Heptadecàgon">Heptadecàgon</a></li> <li><a href="/wiki/Octodec%C3%A0gon" title="Octodecàgon">Octodecàgon</a></li> <li><a href="/w/index.php?title=Enneadec%C3%A0gon&action=edit&redlink=1" class="new" title="Enneadecàgon (encara no existeix)">Enneadecàgon</a></li> <li><a href="/wiki/Icos%C3%A0gon" title="Icosàgon">Icosàgon</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">21–100 costats<br />(seleccionats)</th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/w/index.php?title=Icos%C3%ADdigon&action=edit&redlink=1" class="new" title="Icosídigon (encara no existeix)">Icosídigon (22)</a></li> <li><a href="/w/index.php?title=Icositetr%C3%A0gon&action=edit&redlink=1" class="new" title="Icositetràgon (encara no existeix)">Icositetràgon (24)</a></li> <li><a href="/w/index.php?title=Icosihex%C3%A0gon&action=edit&redlink=1" class="new" title="Icosihexàgon (encara no existeix)">Icosihexàgon (26)</a></li> <li><a href="/w/index.php?title=Icosioct%C3%A0gon&action=edit&redlink=1" class="new" title="Icosioctàgon (encara no existeix)">Icosioctàgon (28)</a></li> <li><a href="/w/index.php?title=Triacont%C3%A0gon&action=edit&redlink=1" class="new" title="Triacontàgon (encara no existeix)">Triacontàgon (30)</a></li> <li><a href="/w/index.php?title=Triacontad%C3%ADgon&action=edit&redlink=1" class="new" title="Triacontadígon (encara no existeix)">Triacontadígon (32)</a></li> <li><a href="/w/index.php?title=Triacontatetr%C3%A0gon&action=edit&redlink=1" class="new" title="Triacontatetràgon (encara no existeix)">Triacontatetràgon (34)</a></li> <li><a href="/w/index.php?title=Tetracont%C3%A0gon&action=edit&redlink=1" class="new" title="Tetracontàgon (encara no existeix)">Tetracontàgon (40)</a></li> <li><a href="/w/index.php?title=Tetracontad%C3%ADgon&action=edit&redlink=1" class="new" title="Tetracontadígon (encara no existeix)">Tetracontadígon (42)</a></li> <li><a href="/w/index.php?title=Tetracontaoct%C3%A0gon&action=edit&redlink=1" class="new" title="Tetracontaoctàgon (encara no existeix)">Tetracontaoctàgon (48)</a></li> <li><a href="/w/index.php?title=Pentacont%C3%A0gon&action=edit&redlink=1" class="new" title="Pentacontàgon (encara no existeix)">Pentacontàgon (50)</a></li> <li><a href="/w/index.php?title=Hexacont%C3%A0gon&action=edit&redlink=1" class="new" title="Hexacontàgon (encara no existeix)">Hexacontàgon (60)</a></li> <li><a href="/w/index.php?title=Hexacontatetr%C3%A0gon&action=edit&redlink=1" class="new" title="Hexacontatetràgon (encara no existeix)">Hexacontatetràgon (64)</a></li> <li><a href="/w/index.php?title=Heptacont%C3%A0gon&action=edit&redlink=1" class="new" title="Heptacontàgon (encara no existeix)">Heptacontàgon (70)</a></li> <li><a href="/w/index.php?title=Octacont%C3%A0gon&action=edit&redlink=1" class="new" title="Octacontàgon (encara no existeix)">Octacontàgon (80)</a></li> <li><a href="/w/index.php?title=Enneacont%C3%A0gon&action=edit&redlink=1" class="new" title="Enneacontàgon (encara no existeix)">Enneacontàgon (90)</a></li> <li><a href="/w/index.php?title=Enneacontahex%C3%A0gon&action=edit&redlink=1" class="new" title="Enneacontahexàgon (encara no existeix)">Enneacontahexàgon (96)</a></li> <li><a href="/w/index.php?title=Hect%C3%B2gon&action=edit&redlink=1" class="new" title="Hectògon (encara no existeix)">Hectògon (100)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">>100 costats</th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/w/index.php?title=120-gon&action=edit&redlink=1" class="new" title="120-gon (encara no existeix)">120-gon</a></li> <li><a href="/w/index.php?title=257-gon&action=edit&redlink=1" class="new" title="257-gon (encara no existeix)">257-gon</a></li> <li><a href="/w/index.php?title=360-gon&action=edit&redlink=1" class="new" title="360-gon (encara no existeix)">360-gon</a></li> <li><a href="/w/index.php?title=Xili%C3%A0gon&action=edit&redlink=1" class="new" title="Xiliàgon (encara no existeix)">Xiliàgon (1,000)</a></li> <li><a href="/w/index.php?title=Miri%C3%A0gon&action=edit&redlink=1" class="new" title="Miriàgon (encara no existeix)">Miriàgon (10,000)</a></li> <li><a href="/w/index.php?title=65537-gon&action=edit&redlink=1" class="new" title="65537-gon (encara no existeix)">65537-gon</a></li> <li><a href="/w/index.php?title=Meg%C3%A0gon&action=edit&redlink=1" class="new" title="Megàgon (encara no existeix)">Megàgon (1,000,000)</a></li> <li><a href="/w/index.php?title=Apeir%C3%B2gon&action=edit&redlink=1" class="new" title="Apeirògon (encara no existeix)">Apeirògon (∞)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Pol%C3%ADgon_estelat" title="Polígon estelat">Polígons estelats</a><br />(5–12 costats)</th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Pentacle" title="Pentacle">Pentagrama</a></li> <li><a href="/wiki/Hexagrama" title="Hexagrama">Hexagrama</a></li> <li><a href="/w/index.php?title=Heptagrama&action=edit&redlink=1" class="new" title="Heptagrama (encara no existeix)">Heptagrama</a></li> <li><a href="/wiki/Octagrama" title="Octagrama">Octagrama</a></li> <li><a href="/wiki/Enneagrama_(geometria)" title="Enneagrama (geometria)">Enneagrama</a></li> <li><a href="/w/index.php?title=Decagrama&action=edit&redlink=1" class="new" title="Decagrama (encara no existeix)">Decagrama</a></li> <li><a href="/w/index.php?title=Hendecagrama&action=edit&redlink=1" class="new" title="Hendecagrama (encara no existeix)">Hendecagrama</a></li> <li><a href="/w/index.php?title=Dodecagrama&action=edit&redlink=1" class="new" title="Dodecagrama (encara no existeix)">Dodecagrama</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Obtingut de «<a dir="ltr" href="https://ca.wikipedia.org/w/index.php?title=Trapezoide&oldid=33222259">https://ca.wikipedia.org/w/index.php?title=Trapezoide&oldid=33222259</a>»</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Especial:Categorias" title="Especial:Categorias">Categoria</a>: <ul><li><a href="/wiki/Categoria:Quadril%C3%A0ters" 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