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<a class="vector-toc-link" href="#L'octaèdre_articulé"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>L'octaèdre articulé</span> </div> </a> <ul id="toc-L'octaèdre_articulé-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Notes_et_références" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Notes_et_références"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Notes et références</span> </div> </a> <ul id="toc-Notes_et_références-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Voir_aussi" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Voir_aussi"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Voir aussi</span> </div> </a> <button aria-controls="toc-Voir_aussi-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Afficher / masquer la sous-section Voir aussi</span> </button> <ul id="toc-Voir_aussi-sublist" class="vector-toc-list"> <li id="toc-Bibliographie" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Bibliographie"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.1</span> <span>Bibliographie</span> </div> </a> <ul id="toc-Bibliographie-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Articles_connexes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Articles_connexes"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.2</span> <span>Articles connexes</span> </div> </a> <ul id="toc-Articles_connexes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Liens_externes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Liens_externes"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.3</span> <span>Liens externes</span> </div> </a> <ul id="toc-Liens_externes-sublist" class="vector-toc-list"> </ul> </li> </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="Sommaire" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Table des matières" > <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="Basculer la table des matières" > <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">Basculer la table des matières</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">Octaèdre</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="Aller à un article dans une autre langue. Disponible en 53 langues." > <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-53" 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">53 langues</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Okta%C3%ABder" title="Oktaëder – afrikaans" lang="af" hreflang="af" data-title="Oktaëder" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AB%D9%85%D8%A7%D9%86%D9%8A_%D9%88%D8%AC%D9%88%D9%87" title="ثماني وجوه – arabe" lang="ar" hreflang="ar" data-title="ثماني وجوه" data-language-autonym="العربية" data-language-local-name="arabe" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Oktaedr" title="Oktaedr – azerbaïdjanais" lang="az" hreflang="az" data-title="Oktaedr" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaïdjanais" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D1%8D%D0%B4%D1%80" title="Октаэдр – bachkir" lang="ba" hreflang="ba" data-title="Октаэдр" data-language-autonym="Башҡортса" data-language-local-name="bachkir" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D0%B5%D0%B4%D1%8A%D1%80" title="Октаедър – bulgare" lang="bg" hreflang="bg" data-title="Октаедър" data-language-autonym="Български" data-language-local-name="bulgare" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Oct%C3%A0edre" title="Octàedre – catalan" lang="ca" hreflang="ca" data-title="Octàedre" data-language-autonym="Català" data-language-local-name="catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/%D0%91%D0%B0%D1%80%D1%85%D3%80%D1%81%D0%BE%D0%BD%D0%B0%D1%80%D0%BD%D0%B8%D0%B3" title="БархӀсонарниг – tchétchène" lang="ce" hreflang="ce" data-title="БархӀсонарниг" data-language-autonym="Нохчийн" data-language-local-name="tchétchène" class="interlanguage-link-target"><span>Нохчийн</span></a></li><li class="interlanguage-link interwiki-co mw-list-item"><a href="https://co.wikipedia.org/wiki/Uttaedru" title="Uttaedru – corse" lang="co" hreflang="co" data-title="Uttaedru" data-language-autonym="Corsu" data-language-local-name="corse" class="interlanguage-link-target"><span>Corsu</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Osmist%C4%9Bn" title="Osmistěn – tchèque" lang="cs" hreflang="cs" data-title="Osmistěn" data-language-autonym="Čeština" data-language-local-name="tchèque" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D1%8D%D0%B4%D1%80" title="Октаэдр – tchouvache" lang="cv" hreflang="cv" data-title="Октаэдр" data-language-autonym="Чӑвашла" data-language-local-name="tchouvache" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Oktaeder" title="Oktaeder – danois" lang="da" hreflang="da" data-title="Oktaeder" data-language-autonym="Dansk" data-language-local-name="danois" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Oktaeder" title="Oktaeder – allemand" lang="de" hreflang="de" data-title="Oktaeder" data-language-autonym="Deutsch" data-language-local-name="allemand" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9F%CE%BA%CF%84%CE%AC%CE%B5%CE%B4%CF%81%CE%BF" title="Οκτάεδρο – grec" lang="el" hreflang="el" data-title="Οκτάεδρο" data-language-autonym="Ελληνικά" data-language-local-name="grec" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Octahedron" title="Octahedron – anglais" lang="en" hreflang="en" data-title="Octahedron" data-language-autonym="English" data-language-local-name="anglais" 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/Okedro" title="Okedro – espéranto" lang="eo" hreflang="eo" data-title="Okedro" data-language-autonym="Esperanto" data-language-local-name="espéranto" 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/Octaedro" title="Octaedro – espagnol" lang="es" hreflang="es" data-title="Octaedro" data-language-autonym="Español" data-language-local-name="espagnol" 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/Oktaeeder" title="Oktaeeder – estonien" lang="et" hreflang="et" data-title="Oktaeeder" data-language-autonym="Eesti" data-language-local-name="estonien" 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/Oktaedro" title="Oktaedro – basque" lang="eu" hreflang="eu" data-title="Oktaedro" data-language-autonym="Euskara" data-language-local-name="basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%87%D8%B4%D8%AA%E2%80%8C%D9%88%D8%AC%D9%87%DB%8C" title="هشت‌وجهی – persan" lang="fa" hreflang="fa" data-title="هشت‌وجهی" data-language-autonym="فارسی" data-language-local-name="persan" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Oktaedri" title="Oktaedri – finnois" lang="fi" hreflang="fi" data-title="Oktaedri" data-language-autonym="Suomi" data-language-local-name="finnois" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Octaedro" title="Octaedro – galicien" lang="gl" hreflang="gl" data-title="Octaedro" data-language-autonym="Galego" data-language-local-name="galicien" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he badge-Q70894304 mw-list-item" title=""><a href="https://he.wikipedia.org/wiki/%D7%AA%D7%9E%D7%A0%D7%99%D7%95%D7%9F" title="תמניון – hébreu" lang="he" hreflang="he" data-title="תמניון" data-language-autonym="עברית" data-language-local-name="hébreu" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Oktaedar" title="Oktaedar – croate" lang="hr" hreflang="hr" data-title="Oktaedar" data-language-autonym="Hrvatski" data-language-local-name="croate" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Okta%C3%A9der" title="Oktaéder – hongrois" lang="hu" hreflang="hu" data-title="Oktaéder" data-language-autonym="Magyar" data-language-local-name="hongrois" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy badge-Q70893996 mw-list-item" title=""><a href="https://hy.wikipedia.org/wiki/%D5%95%D5%AF%D5%BF%D5%A1%D5%A7%D5%A4%D6%80" title="Օկտաէդր – arménien" lang="hy" hreflang="hy" data-title="Օկտաէդր" data-language-autonym="Հայերեն" data-language-local-name="arménien" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Oktahedron" title="Oktahedron – indonésien" lang="id" hreflang="id" data-title="Oktahedron" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonésien" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Ottaedro" title="Ottaedro – italien" lang="it" hreflang="it" data-title="Ottaedro" data-language-autonym="Italiano" data-language-local-name="italien" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E5%85%AB%E9%9D%A2%E4%BD%93" title="八面体 – japonais" lang="ja" hreflang="ja" data-title="八面体" data-language-autonym="日本語" data-language-local-name="japonais" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D1%8D%D0%B4%D1%80" title="Октаэдр – kazakh" lang="kk" hreflang="kk" data-title="Октаэдр" data-language-autonym="Қазақша" data-language-local-name="kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%8C%94%EB%A9%B4%EC%B2%B4" title="팔면체 – coréen" lang="ko" hreflang="ko" data-title="팔면체" data-language-autonym="한국어" data-language-local-name="coréen" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D1%8D%D0%B4%D1%80" title="Октаэдр – kirghize" lang="ky" hreflang="ky" data-title="Октаэдр" data-language-autonym="Кыргызча" data-language-local-name="kirghize" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Octahedron" title="Octahedron – latin" lang="la" hreflang="la" data-title="Octahedron" data-language-autonym="Latina" data-language-local-name="latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Oktaedras" title="Oktaedras – lituanien" lang="lt" hreflang="lt" data-title="Oktaedras" data-language-autonym="Lietuvių" data-language-local-name="lituanien" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Oktaedrs" title="Oktaedrs – letton" lang="lv" hreflang="lv" data-title="Oktaedrs" data-language-autonym="Latviešu" data-language-local-name="letton" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D0%B5%D0%B4%D0%B0%D1%80" title="Октаедар – macédonien" lang="mk" hreflang="mk" data-title="Октаедар" data-language-autonym="Македонски" data-language-local-name="macédonien" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Achtvlak" title="Achtvlak – néerlandais" lang="nl" hreflang="nl" data-title="Achtvlak" data-language-autonym="Nederlands" data-language-local-name="néerlandais" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Oktaeder" title="Oktaeder – norvégien nynorsk" lang="nn" hreflang="nn" data-title="Oktaeder" data-language-autonym="Norsk nynorsk" data-language-local-name="norvégien nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Oktaeder" title="Oktaeder – norvégien bokmål" lang="nb" hreflang="nb" data-title="Oktaeder" data-language-autonym="Norsk bokmål" data-language-local-name="norvégien bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Octaedro" title="Octaedro – portugais" lang="pt" hreflang="pt" data-title="Octaedro" data-language-autonym="Português" data-language-local-name="portugais" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Octaedru" title="Octaedru – roumain" lang="ro" hreflang="ro" data-title="Octaedru" data-language-autonym="Română" data-language-local-name="roumain" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-rsk mw-list-item"><a href="https://rsk.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D0%B5%D0%B4%D0%B5%D1%80" title="Октаедер – Pannonian Rusyn" lang="rsk" hreflang="rsk" data-title="Октаедер" data-language-autonym="Руски" data-language-local-name="Pannonian Rusyn" class="interlanguage-link-target"><span>Руски</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D1%8D%D0%B4%D1%80" title="Октаэдр – russe" lang="ru" hreflang="ru" data-title="Октаэдр" data-language-autonym="Русский" data-language-local-name="russe" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Ottaedru" title="Ottaedru – sicilien" lang="scn" hreflang="scn" data-title="Ottaedru" data-language-autonym="Sicilianu" data-language-local-name="sicilien" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Oktaedar" title="Oktaedar – serbo-croate" lang="sh" hreflang="sh" data-title="Oktaedar" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbo-croate" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Octahedron" title="Octahedron – Simple English" lang="en-simple" hreflang="en-simple" data-title="Octahedron" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Oktaeder" title="Oktaeder – slovène" lang="sl" hreflang="sl" data-title="Oktaeder" data-language-autonym="Slovenščina" data-language-local-name="slovène" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D0%B5%D0%B4%D0%B0%D1%80" title="Октаедар – serbe" lang="sr" hreflang="sr" data-title="Октаедар" data-language-autonym="Српски / srpski" data-language-local-name="serbe" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Oktaeder" title="Oktaeder – suédois" lang="sv" hreflang="sv" data-title="Oktaeder" data-language-autonym="Svenska" data-language-local-name="suédois" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Sekiz_y%C3%BCzl%C3%BC" title="Sekiz yüzlü – turc" lang="tr" hreflang="tr" data-title="Sekiz yüzlü" data-language-autonym="Türkçe" data-language-local-name="turc" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D1%8D%D0%B4%D1%80" title="Октаэдр – tatar" lang="tt" hreflang="tt" data-title="Октаэдр" data-language-autonym="Татарча / tatarça" data-language-local-name="tatar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D0%B5%D0%B4%D1%80" title="Октаедр – ukrainien" lang="uk" hreflang="uk" data-title="Октаедр" data-language-autonym="Українська" data-language-local-name="ukrainien" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Oktaedr" 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class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Apparence"> <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">Apparence</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">déplacer vers la barre latérale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">masquer</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">Un article de Wikipédia, l'encyclopédie libre.</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="fr" dir="ltr"><figure typeof="mw:File/Thumb"><span class="mw-3d-wrapper" data-label="3D"><a href="/wiki/Fichier:Octaedro_regular_3D.stl" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Octaedro_regular_3D.stl/250px-Octaedro_regular_3D.stl.png" decoding="async" width="150" height="113" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Octaedro_regular_3D.stl/330px-Octaedro_regular_3D.stl.png 2x" data-file-width="5120" data-file-height="2880" /></a></span><figcaption>Octaèdre régulier 3D</figcaption></figure> <p>En <a href="/wiki/G%C3%A9om%C3%A9trie" title="Géométrie">géométrie</a>, un <b>octaèdre</b> (du <a href="/wiki/Grec_ancien" title="Grec ancien">grec</a> <i>oktô</i>, huit et <i>hedra</i>, face) est un <a href="/wiki/Poly%C3%A8dre" title="Polyèdre">polyèdre</a> à huit faces. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Présentation"><span id="Pr.C3.A9sentation"></span>Présentation</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Octa%C3%A8dre&veaction=edit&section=1" title="Modifier la section : Présentation" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Octa%C3%A8dre&action=edit&section=1" title="Modifier le code source de la section : Présentation"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Certains octaèdres satisfont des conditions de symétrie ou de régularité des faces : </p> <ul><li>l'<a href="/wiki/Octa%C3%A8dre_r%C3%A9gulier" title="Octaèdre régulier">octaèdre régulier</a>,</li> <li>le <a href="/wiki/Prisme_hexagonal" title="Prisme hexagonal">prisme hexagonal</a>,</li> <li>la <a href="/wiki/Pyramide" title="Pyramide">pyramide</a> à base <a href="/wiki/Heptagone" title="Heptagone">heptagonale</a>,</li> <li>le <a href="/wiki/T%C3%A9tra%C3%A8dre_tronqu%C3%A9" title="Tétraèdre tronqué">tétraèdre tronqué</a>,</li> <li>le <a href="/wiki/Trap%C3%A9zo%C3%A8dre" title="Trapézoèdre">trapézoèdre</a> tétragonal.</li></ul> <p>Un octaèdre dont toutes les faces sont triangulaires possède douze arêtes et six sommets. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/Fichier:Octahedron.svg" class="mw-file-description" title="Octaèdre régulier"><img alt="Octaèdre régulier" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/07/Octahedron.svg/120px-Octahedron.svg.png" decoding="async" width="120" height="119" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/07/Octahedron.svg/250px-Octahedron.svg.png 1.5x" data-file-width="840" data-file-height="832" /></a></span></div> <div class="gallerytext"> Octaèdre régulier</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/Fichier:Hexagonal_prism.png" class="mw-file-description" title="Prisme hexagonal"><img alt="Prisme hexagonal" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/25/Hexagonal_prism.png/120px-Hexagonal_prism.png" decoding="async" width="120" height="104" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/25/Hexagonal_prism.png/180px-Hexagonal_prism.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/25/Hexagonal_prism.png/240px-Hexagonal_prism.png 2x" data-file-width="991" data-file-height="858" /></a></span></div> <div class="gallerytext"> Prisme hexagonal</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/Fichier:Truncated_tetrahedron.png" class="mw-file-description" title="Tétraèdre tronqué"><img alt="Tétraèdre tronqué" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/75/Truncated_tetrahedron.png/120px-Truncated_tetrahedron.png" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/75/Truncated_tetrahedron.png/180px-Truncated_tetrahedron.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/75/Truncated_tetrahedron.png/240px-Truncated_tetrahedron.png 2x" data-file-width="1000" data-file-height="1000" /></a></span></div> <div class="gallerytext"> Tétraèdre tronqué</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/Fichier:Tetragonal_trapezohedron.png" class="mw-file-description" title="Trapézoèdre tétragonal"><img alt="Trapézoèdre tétragonal" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/Tetragonal_trapezohedron.png/120px-Tetragonal_trapezohedron.png" decoding="async" width="93" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/Tetragonal_trapezohedron.png/250px-Tetragonal_trapezohedron.png 1.5x" data-file-width="499" data-file-height="640" /></a></span></div> <div class="gallerytext"> Trapézoèdre tétragonal</div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="L'octaèdre_articulé"><span id="L.27octa.C3.A8dre_articul.C3.A9"></span>L'octaèdre articulé</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Octa%C3%A8dre&veaction=edit&section=2" title="Modifier la section : L'octaèdre articulé" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Octa%C3%A8dre&action=edit&section=2" title="Modifier le code source de la section : L'octaèdre articulé"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Il existe des octaèdres flexibles, ce sont les polyèdres déformables de taille minimale. Comme l'a prouvé <a href="/wiki/Augustin_Louis_Cauchy" title="Augustin Louis Cauchy">Cauchy</a>, ils ne peuvent pas être <a href="/wiki/Poly%C3%A8dre_convexe" class="mw-redirect" title="Polyèdre convexe">convexes</a><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>. </p> <div class="mw-heading mw-heading2"><h2 id="Notes_et_références"><span id="Notes_et_r.C3.A9f.C3.A9rences"></span>Notes et références</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Octa%C3%A8dre&veaction=edit&section=3" title="Modifier la section : Notes et références" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Octa%C3%A8dre&action=edit&section=3" title="Modifier le code source de la section : Notes et références"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="references-small decimal" style=""><div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a> </span><span class="reference-text">Voir Bricard R. <i>Mémoire sur la théorie de l'octaèdre articulé</i>, in <i>Journal de Mathématiques pures et appliquées</i>, Liouville, tome 3:113-148, 1897</span> </li> </ol></div> </div> <div class="mw-heading mw-heading2"><h2 id="Voir_aussi">Voir aussi</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Octa%C3%A8dre&veaction=edit&section=4" title="Modifier la section : Voir aussi" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Octa%C3%A8dre&action=edit&section=4" title="Modifier le code source de la section : Voir aussi"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Bibliographie">Bibliographie</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Octa%C3%A8dre&veaction=edit&section=5" title="Modifier la section : Bibliographie" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Octa%C3%A8dre&action=edit&section=5" title="Modifier le code source de la section : Bibliographie"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><span class="ouvrage" id="Coxeter1973"><span class="ouvrage" id="H._S._M._Coxeter1973"><abbr class="abbr indicateur-langue" title="Langue : anglais">(en)</abbr> <a href="/wiki/H._S._M._Coxeter" class="mw-redirect" title="H. S. M. Coxeter">H. S. M. <span class="nom_auteur">Coxeter</span></a>, <cite class="italique" lang="en"><a href="/wiki/Regular_Polytopes" title="Regular Polytopes">Regular Polytopes</a></cite>, New York, <a href="/wiki/Dover_Publications" title="Dover Publications">Dover Publications</a>, <time>1973</time>, <abbr class="abbr" title="troisième">3<sup>e</sup></abbr> <abbr class="abbr" title="édition">éd.</abbr>, 321 <abbr class="abbr" title="pages">p.</abbr> <small style="line-height:1em;">(<a href="/wiki/International_Standard_Book_Number" title="International Standard Book Number">ISBN</a> <a href="/wiki/Sp%C3%A9cial:Ouvrages_de_r%C3%A9f%C3%A9rence/978-0-486-61480-9" title="Spécial:Ouvrages de référence/978-0-486-61480-9"><span class="nowrap">978-0-486-61480-9</span></a>, <a href="/wiki/Num%C3%A9ro_de_contr%C3%B4le_de_la_Biblioth%C3%A8que_du_Congr%C3%A8s" title="Numéro de contrôle de la Bibliothèque du Congrès">LCCN</a> <span class="plainlinks noarchive nowrap"><a rel="nofollow" class="external text" href="https://lccn.loc.gov/73084364">73084364</a></span>, <a rel="nofollow" class="external text" href="https://books.google.com/books?id=iWvXsVInpgMC&printsec=frontcover">lire en ligne</a>)</small>, <abbr class="abbr" title="pages">p.</abbr> <span class="nowrap">121–122</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Regular+Polytopes&rft.place=New+York&rft.pub=Dover+Publications&rft.edition=3&rft.aulast=Coxeter&rft.aufirst=H.+S.+M.&rft.date=1973&rft.pages=121%E2%80%93122&rft.tpages=321&rft.isbn=978-0-486-61480-9&rfr_id=info%3Asid%2Ffr.wikipedia.org%3AOcta%C3%A8dre"></span></span></span>, p. 296, Table I (iii): Regular Polytopes, three regular polytopes in n-dimensions (n>=5) </p> <div class="mw-heading mw-heading3"><h3 id="Articles_connexes">Articles connexes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Octa%C3%A8dre&veaction=edit&section=6" title="Modifier la section : Articles connexes" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Octa%C3%A8dre&action=edit&section=6" title="Modifier le code source de la section : Articles connexes"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>A sept ou neuf faces <ul><li><a href="/wiki/Hepta%C3%A8dre" title="Heptaèdre">heptaèdre</a></li> <li><a href="/wiki/Enn%C3%A9a%C3%A8dre" title="Ennéaèdre">ennéaèdre</a></li></ul></li></ul> <ul><li>L'octaèdre régulier est un : <ul><li><a href="/wiki/Poly%C3%A8dre" title="Polyèdre">polyèdre</a></li> <li><a href="/wiki/Solide_de_Platon" title="Solide de Platon">solide de Platon</a></li> <li><a href="/wiki/Delta%C3%A8dre" title="Deltaèdre">deltaèdre</a></li></ul></li> <li>Autres polytopes : <ul><li><a href="/wiki/Polytope" title="Polytope">Polytope</a></li> <li><a href="/wiki/Hypercube" title="Hypercube">Hypercube</a>, dual de l'hyperoctaèdre</li> <li>n-<a href="/wiki/Simplexe" title="Simplexe">simplexe</a></li> <li><a href="/wiki/Cubocta%C3%A8dre" title="Cuboctaèdre">Cuboctaèdre</a></li></ul></li></ul> <div class="mw-heading mw-heading3"><h3 id="Liens_externes">Liens externes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Octa%C3%A8dre&veaction=edit&section=7" title="Modifier la section : Liens externes" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Octa%C3%A8dre&action=edit&section=7" title="Modifier le code source de la section : Liens externes"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Articles MathWorld (en anglais) : <ul><li><a rel="nofollow" class="external text" href="http://mathworld.wolfram.com/CrossPolytope.html">Les hyperoctaèdres (polytopes croisés)</a></li> <li><a rel="nofollow" class="external text" href="http://mathworld.wolfram.com/16-Cell.html">L'hexadécachore ou 16-cellules</a></li></ul></li></ul> <div class="navbox-container" style="clear:both;"> <table class="navbox collapsible noprint autocollapse" style=""> <tbody><tr><th class="navbox-title" colspan="2" style=""><div style="float:left; width:6em; text-align:left"><div class="noprint plainlinks nowrap tnavbar" style="padding:0; font-size:xx-small; color:var(--color-emphasized, #000000);"><a href="/wiki/Mod%C3%A8le:Palette_Poly%C3%A8dres" title="Modèle:Palette Polyèdres"><abbr class="abbr" title="Voir ce modèle.">v</abbr></a> · <a class="external text" href="https://fr.wikipedia.org/w/index.php?title=Mod%C3%A8le:Palette_Poly%C3%A8dres&action=edit"><abbr class="abbr" title="Modifier ce modèle. Merci de prévisualiser avant de sauvegarder.">m</abbr></a></div></div><div style="font-size:110%"><a href="/wiki/Poly%C3%A8dre" title="Polyèdre">Polyèdres</a></div></th> </tr> <tr> <th class="navbox-group" style="width:70px">1–10 faces</th> <td class="navbox-list" style=""><div class="liste-horizontale"> <ul><li><a href="/wiki/Monogone" class="mw-redirect" title="Monogone">Monoèdre</a></li> <li><a href="/wiki/Di%C3%A8dre" class="mw-disambig" title="Dièdre">Dièdre</a></li> <li><a href="/wiki/Tri%C3%A8dre" title="Trièdre">Trièdre</a></li> <li><a href="/wiki/T%C3%A9tra%C3%A8dre" title="Tétraèdre">Tétraèdre</a></li> <li><a href="/wiki/Penta%C3%A8dre" title="Pentaèdre">Pentaèdre</a></li> <li><a href="/wiki/Hexa%C3%A8dre" title="Hexaèdre">Hexaèdre</a></li> <li><a href="/wiki/Hepta%C3%A8dre" title="Heptaèdre">Heptaèdre</a></li> <li><a class="mw-selflink selflink">Octaèdre</a></li> <li><a href="/wiki/Enn%C3%A9a%C3%A8dre" title="Ennéaèdre">Ennéaèdre</a></li> <li><a href="/wiki/D%C3%A9ca%C3%A8dre" title="Décaèdre">Décaèdre</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:70px">11–20 faces</th> <td class="navbox-list navbox-even" style=""><div class="liste-horizontale"> <ul><li><a href="/wiki/Hend%C3%A9ca%C3%A8dre" title="Hendécaèdre">Hendécaèdre</a></li> <li><a href="/wiki/Dod%C3%A9ca%C3%A8dre" title="Dodécaèdre">Dodécaèdre</a></li> <li><a href="/wiki/Trid%C3%A9ca%C3%A8dre" title="Tridécaèdre">Tridécaèdre</a></li> <li><a href="/wiki/T%C3%A9trakaid%C3%A9ca%C3%A8dre" title="Tétrakaidécaèdre">Tétrakaidécaèdre</a></li> <li><a href="/w/index.php?title=Pentad%C3%A9ca%C3%A8dre&action=edit&redlink=1" class="new" title="Pentadécaèdre (page inexistante)">Pentadécaèdre</a></li> <li><a href="/w/index.php?title=Hexad%C3%A9ca%C3%A8dre&action=edit&redlink=1" class="new" title="Hexadécaèdre (page inexistante)">Hexadécaèdre</a></li> <li><a href="/wiki/Heptad%C3%A9ca%C3%A8dre" title="Heptadécaèdre">Heptadécaèdre</a></li> <li><a href="/wiki/Octad%C3%A9ca%C3%A8dre" title="Octadécaèdre">Octadécaèdre</a></li> <li><a href="/w/index.php?title=Ennead%C3%A9ca%C3%A8dre&action=edit&redlink=1" class="new" title="Enneadécaèdre (page inexistante)">Enneadécaèdre</a></li> <li><a href="/wiki/Icosa%C3%A8dre" title="Icosaèdre">Icosaèdre</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:70px">Autres</th> <td class="navbox-list" style=""><div class="liste-horizontale"> <ul><li><a href="/w/index.php?title=Icosit%C3%A9tra%C3%A8dre&action=edit&redlink=1" class="new" title="Icositétraèdre (page inexistante)">Icositétraèdre</a> (24)</li> <li><a href="/w/index.php?title=Triaconta%C3%A8dre&action=edit&redlink=1" class="new" title="Triacontaèdre (page inexistante)">Triacontaèdre</a> (30) <ul><li><a href="/wiki/Triaconta%C3%A8dre_rhombique" title="Triacontaèdre rhombique">Triacontaèdre rhombique</a></li></ul></li> <li><a href="/w/index.php?title=Hex%C3%A9conta%C3%A8dre&action=edit&redlink=1" class="new" title="Hexécontaèdre (page inexistante)">Hexécontaèdre</a> (60)</li> <li><a href="/w/index.php?title=Enneaconta%C3%A8dre&action=edit&redlink=1" class="new" title="Enneacontaèdre (page inexistante)">Enneacontaèdre</a> (90)</li> <li><a href="/w/index.php?title=Hectotriadio%C3%A8dre&action=edit&redlink=1" class="new" title="Hectotriadioèdre (page inexistante)">Hectotriadioèdre</a> (132)</li> <li><a href="/wiki/Sym%C3%A9tro%C3%A8dre" title="Symétroèdre">Symétroèdre</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:70px">Description</th> <td class="navbox-list navbox-even" style=""><div class="liste-horizontale"> <ul><li><a href="/wiki/Ar%C3%AAte_(g%C3%A9om%C3%A9trie)" title="Arête (géométrie)">Arête</a></li> <li><a href="/wiki/Sommet_(g%C3%A9om%C3%A9trie)" title="Sommet (géométrie)">Sommet</a> <ul><li><a href="/wiki/Apex_(g%C3%A9om%C3%A9trie)" title="Apex (géométrie)">Apex</a></li></ul></li> <li><a href="/wiki/Base_(g%C3%A9om%C3%A9trie)" title="Base (géométrie)">Base</a></li> <li><a href="/wiki/Surface_lat%C3%A9rale" class="mw-redirect" title="Surface latérale">Surface latérale</a></li> <li><a href="/wiki/Hauteur_(g%C3%A9om%C3%A9trie)" title="Hauteur (géométrie)">Hauteur</a></li> <li><a href="/wiki/Diagonale" title="Diagonale">Diagonale</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:70px">Voir aussi</th> <td class="navbox-list" style=""><div class="liste-horizontale"> <ul><li><a href="/wiki/Mod%C3%A8le:Palette_Poly%C3%A8dres_uniformes" title="Modèle:Palette Polyèdres uniformes">Modèle:Palette Polyèdres uniformes</a></li> <li><a href="/wiki/Mod%C3%A8le:Palette_Poly%C3%A8dres_duaux_uniformes" title="Modèle:Palette Polyèdres duaux uniformes">Modèle:Palette Polyèdres duaux uniformes</a></li> <li><a href="/wiki/Mod%C3%A8le:Palette_Solides_g%C3%A9om%C3%A9triques" title="Modèle:Palette Solides géométriques">Modèle:Palette Solides géométriques</a></li> <li><a href="/wiki/Mod%C3%A8le:Palette_Solides_de_Johnson" title="Modèle:Palette Solides de Johnson">Modèle:Palette Solides de Johnson</a></li> <li><a href="/wiki/Mod%C3%A8le:Palette_Prismato%C3%AFdes" title="Modèle:Palette Prismatoïdes">Modèle:Palette Prismatoïdes</a></li></ul> </div></td> </tr> </tbody></table> </div> <ul id="bandeau-portail" class="bandeau-portail"><li><span class="bandeau-portail-element"><span class="bandeau-portail-icone"><span class="noviewer" typeof="mw:File"><a href="/wiki/Portail:G%C3%A9om%C3%A9trie" title="Portail de la géométrie"><img alt="icône décorative" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/Circle-icons-rulertriangle.svg/24px-Circle-icons-rulertriangle.svg.png" decoding="async" width="24" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/Circle-icons-rulertriangle.svg/36px-Circle-icons-rulertriangle.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/79/Circle-icons-rulertriangle.svg/48px-Circle-icons-rulertriangle.svg.png 2x" data-file-width="512" data-file-height="512" /></a></span></span> <span class="bandeau-portail-texte"><a href="/wiki/Portail:G%C3%A9om%C3%A9trie" title="Portail:Géométrie">Portail de la géométrie</a></span> </span></li> </ul>    </div><noscript><img src="https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Ce document provient de « <a dir="ltr" href="https://fr.wikipedia.org/w/index.php?title=Octaèdre&oldid=220450035">https://fr.wikipedia.org/w/index.php?title=Octaèdre&oldid=220450035</a> ».</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Cat%C3%A9gorie:Accueil" title="Catégorie:Accueil">Catégorie</a> : <ul><li><a href="/wiki/Cat%C3%A9gorie:Poly%C3%A8dre" title="Catégorie:Polyèdre">Polyèdre</a></li></ul></div><div 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