{"id":1256,"date":"2012-02-01T21:25:11","date_gmt":"2012-02-01T20:25:11","guid":{"rendered":"http:\/\/jlggb.net\/blog3\/?p=1256"},"modified":"2020-08-23T12:54:37","modified_gmt":"2020-08-23T10:54:37","slug":"des-archives-intersection-dun-cone-et-dun-cylindre","status":"publish","type":"post","link":"https:\/\/jlggb.net\/blog3\/?p=1256","title":{"rendered":"Des archives : intersection d&rsquo;un c\u00f4ne et d&rsquo;un cylindre"},"content":{"rendered":"<p><a href=\"https:\/\/jlggb.net\/blog3\/wp-content\/uploads\/2012\/02\/cone-cylindre-1963.jpg\" data-rel=\"lightbox-image-0\" data-imagelightbox=\"0\" data-rl_title=\"\" data-rl_caption=\"\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1257\" title=\"\" src=\"https:\/\/jlggb.net\/blog3\/wp-content\/uploads\/2012\/02\/cone-cylindre-1963.jpg\" alt=\"\" width=\"640\" height=\"853\" srcset=\"https:\/\/jlggb.net\/blog3\/wp-content\/uploads\/2012\/02\/cone-cylindre-1963.jpg 1200w, https:\/\/jlggb.net\/blog3\/wp-content\/uploads\/2012\/02\/cone-cylindre-1963-225x300.jpg 225w, https:\/\/jlggb.net\/blog3\/wp-content\/uploads\/2012\/02\/cone-cylindre-1963-768x1024.jpg 768w, https:\/\/jlggb.net\/blog3\/wp-content\/uploads\/2012\/02\/cone-cylindre-1963-112x150.jpg 112w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><br \/>\nPuisqu&rsquo;il est question de g\u00e9om\u00e9trie descriptive dans l&rsquo;article pr\u00e9c\u00e9dent, ressortons cette \u00e9pure, la N\u00b013 de l&rsquo;ann\u00e9e 1962-1963. Rappelons que la descriptive est une m\u00e9thode qui permet de d\u00e9terminer des formes g\u00e9om\u00e9triques par le pur dessin. Ici, trouver l&rsquo;intersection d&rsquo;un c\u00f4ne et d&rsquo;un cylindre dont on conna\u00eet les dimensions et les positions relatives dans l&rsquo;espace. Je m&rsquo;\u00e9tais amus\u00e9 \u00e0 mettre des d\u00e9grad\u00e9s de couleurs et des reflets, ce qui me valu la remarque de mon professeur (l&rsquo;une des classes qu&rsquo;on nommait hypotaupe au Lyc\u00e9e du Parc de Lyon)&nbsp;: \u00ab\u00a0Vous auriez d\u00fb faire les Beaux-Arts\u00a0\u00bb. Ayant eu sous les yeux et entre les mains des \u00e9pures authentiques du temps de Monge, \u00e0 l&rsquo;aquarelle et au lavis, \u2014 pour l&rsquo;exposition Image calcul\u00e9e \u00e0 la Cit\u00e9 des sciences en 1990 \u2014 j&rsquo;ai mesur\u00e9 combien elles pouvaient \u00eatre infiniment pr\u00e9cises et raffin\u00e9es. Mercredi 1er f\u00e9vrier 2012, 22h30.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Puisqu&rsquo;il est question de g\u00e9om\u00e9trie descriptive dans l&rsquo;article pr\u00e9c\u00e9dent, ressortons cette \u00e9pure, la N\u00b013 de l&rsquo;ann\u00e9e 1962-1963. Rappelons que la descriptive est une m\u00e9thode qui permet de d\u00e9terminer des formes g\u00e9om\u00e9triques par le pur dessin. Ici, trouver l&rsquo;intersection d&rsquo;un c\u00f4ne et d&rsquo;un cylindre dont on conna\u00eet les dimensions et les positions relatives dans l&rsquo;espace. Je &hellip; <a href=\"https:\/\/jlggb.net\/blog3\/?p=1256\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Des archives : intersection d&rsquo;un c\u00f4ne et d&rsquo;un cylindre<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31,24],"tags":[167,166],"class_list":["post-1256","post","type-post","status-publish","format-standard","hentry","category-des-archives","category-monuments","tag-geometrie","tag-monge"],"_links":{"self":[{"href":"https:\/\/jlggb.net\/blog3\/index.php?rest_route=\/wp\/v2\/posts\/1256","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jlggb.net\/blog3\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jlggb.net\/blog3\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jlggb.net\/blog3\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jlggb.net\/blog3\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1256"}],"version-history":[{"count":0,"href":"https:\/\/jlggb.net\/blog3\/index.php?rest_route=\/wp\/v2\/posts\/1256\/revisions"}],"wp:attachment":[{"href":"https:\/\/jlggb.net\/blog3\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1256"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jlggb.net\/blog3\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1256"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jlggb.net\/blog3\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1256"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}