{"id":18720,"date":"2022-03-19T12:51:32","date_gmt":"2022-03-19T11:51:32","guid":{"rendered":"https:\/\/www.valcon.it\/librelogo\/?p=18720"},"modified":"2026-08-07T13:25:56","modified_gmt":"2026-08-07T11:25:56","slug":"tangram-13","status":"publish","type":"post","link":"https:\/\/www.valcon.it\/librelogo\/tangram-13\/","title":{"rendered":"Tangram 13"},"content":{"rendered":"\n<p><em><a href=\"https:\/\/en.wikipedia.org\/wiki\/Tangram\">Wikipedia: Tangram<\/a><\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>Nel 1942 <em>Fu Traing Wang<\/em> e <em>Chuan-Chin Hsiung<\/em> hanno dimostrato che esistono solo <strong>13<\/strong> configurazioni diverse del tangram che producono <strong>figure convesse<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Soluzione<\/h2>\n\n\n\n<a title=\"L\u00e1szl\u00f3 N\u00e9meth, CC0, via Wikimedia Commons\" href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Convex_tangram_shapes.svg\"><img decoding=\"async\" width=\"960\" alt=\"Convex tangram shapes\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/0\/0e\/Convex_tangram_shapes.svg\/960px-Convex_tangram_shapes.svg.png?utm_source=commons.wikimedia.org&#038;utm_campaign=index&#038;utm_content=thumbnail\"><\/a>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: python; title: ; notranslate\" title=\"\">\nGLOBAL ox, oy\n\nTO origin x y\n    GLOBAL ox, oy\n    ox = 150+x*20\n    oy = 600-y*20\nEND\n\nTO place x y\n    POSITION &#x5B;ox+x*20, oy-y*20]\nEND\n\nTO line x y x2 y2\n    PENUP place x y\n    PENDOWN place x2 y2\nEND\n\nTO tri x y x2 y2 x3 y3\n    line x y x2 y2 place x3 y3 FILL\nEND\n\nTO box x y x2 y2 x3 y3 x4 y4\n    line x y x2 y2 place x3 y3 place x4 y4 FILL\nEND\n\nPICTURE \u201cconvex_tangram_shapes.svg\u201d  &#x5B;\nPENSIZE    1 \nHIDETURTLE\nPENCOLOR   \u201cWHITE\u201d\nFILLCOLOR  \u201cBLACK\u201d\n\norigin 18 2\ntri 3 0 3 2 1 2\ntri 1 2 1 3 2 2\ntri 2 2 0 4 2 4\ntri 0 4 1 5 2 4\ntri 2 4 2 3 3 3\nbox 3 3 3 2 2 2 2 3\nbox 1 2 1 3 0 4 0 3\n\norigin 19 8\ntri 0 2 2 2 2 0\ntri 0 4 0 5 1 4\ntri 0 2 0 3 1 3\ntri 0 2 1 3 2 2\ntri 0 5 2 5 2 3\nbox 0 3 0 4 1 4 1 3\nbox 1 3 1 4 2 3 2 2\n\norigin 12.5 4\ntri 0 0 0 2 2 0\ntri 0 2 2 2 2 0\ntri 2 0 2 1 3 1\ntri 2 0 3 1 4 0\ntri 4 1 4 2 3 2\nbox 2 1 2 2 3 2 3 1\nbox 3 1 3 2 4 1 4 0\n\norigin 15 7\ntri 0 2 2 2 2 0\ntri 0 2 2 2 2 4\ntri 0 3 0 4 1 4\ntri 0 5 0 6 1 5\ntri 1 5 1 3 2 4\nbox 0 4 0 5 1 5 1 4\nbox 0 2 0 3 1 4 1 3\n\norigin 11 0\ntri 0 1 2 1 2 3\ntri 2 1 2 3 4 3\ntri 1 0 1 1 2 0\ntri 1 1 3 1 2 0\ntri 2 1 3 2 3 1\nbox 0 0 0 1 1 1 1 0\nbox 3 1 3 2 4 3 4 2\n\norigin 9 3\ntri 0 2 2 2 0 4\ntri 0 4 2 4 2 2\ntri 0 4 1 5 2 4\ntri 0 1 1 1 1 0\ntri 1 1 1 2 2 2\nbox 1 0 1 1 2 2 2 1\nbox 0 1 0 2 1 2 1 1\n\norigin 11 7\ntri 0 2 2 2 2 0\ntri 0 4 2 4 2 6\ntri 0 2 0 3 1 3\ntri 0 2 1 3 2 2\ntri 1 4 2 4 2 3\nbox 0 3 0 4 1 4 1 3\nbox 1 3 1 4 2 3 2 2\n\norigin 5 0\ntri 0 0 0 2 2 0\ntri 0 2 2 2 2 0\ntri 0 2 1 3 1 2\ntri 2 0 3 1 2 2\ntri 2 0 3 0 3 1\nbox 1 2 1 3 2 3 2 2\nbox 2 2 2 3 3 2 3 1\n\norigin 4 4\ntri 0 2 2 2 2 0\ntri 0 2 2 4 2 2\ntri 2 4 2 3 3 3\ntri 2 1 2 2 3 2\ntri 3 1 3 3 4 2\nbox 2 2 2 3 3 3 3 2\nbox 2 0 2 1 3 2 3 1\n\norigin 5 10\ntri 0 0 0 1 1 0\ntri 0 1 3 1 1 0\ntri 0 2 1 3 1 2\ntri 1 1 1 3 3 1\ntri 1 3 3 3 3 1\nbox 0 1 0 2 1 2 1 1\nbox 1 0 2 1 3 1 2 0\n\norigin 0 0\ntri 0 1 1 2 1 1\ntri 1 0 1 2 3 0\ntri 1 2 3 2 3 0\ntri 1 2 2 3 3 2\ntri 3 0 3 1 4 0\nbox 0 0 0 1 1 1 1 0\nbox 3 1 3 2 4 1 4 0\n\norigin 0 3\ntri 0 0 0 2 1 1\ntri 0 3 1 3 1 2\ntri 0 4 1 5 1 4\ntri 1 3 1 5 3 3\ntri 1 1 1 3 3 3\nbox 0 2 0 3 1 2 1 1\nbox 0 3 0 4 1 4 1 3\n\norigin 0 9\ntri 0 0 0 2 2 2\ntri 0 2 0 4 2 2\ntri 2 2 1 3 3 3\ntri 0 4 1 4 1 3\ntri 2 3 2 4 3 4\nbox 1 3 1 4 2 4 2 3\nbox 2 3 3 4 4 4 3 3\n]\n<\/pre><\/div>","protected":false},"excerpt":{"rendered":"<p>Wikipedia: Tangram Nel 1942 Fu Traing Wang e Chuan-Chin Hsiung hanno dimostrato che esistono solo 13 configurazioni diverse del tangram che producono figure convesse Soluzione<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[6],"tags":[],"class_list":["post-18720","post","type-post","status-publish","format-standard","hentry","category-applicazioni"],"_links":{"self":[{"href":"https:\/\/www.valcon.it\/librelogo\/wp-json\/wp\/v2\/posts\/18720","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.valcon.it\/librelogo\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.valcon.it\/librelogo\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.valcon.it\/librelogo\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.valcon.it\/librelogo\/wp-json\/wp\/v2\/comments?post=18720"}],"version-history":[{"count":21,"href":"https:\/\/www.valcon.it\/librelogo\/wp-json\/wp\/v2\/posts\/18720\/revisions"}],"predecessor-version":[{"id":20256,"href":"https:\/\/www.valcon.it\/librelogo\/wp-json\/wp\/v2\/posts\/18720\/revisions\/20256"}],"wp:attachment":[{"href":"https:\/\/www.valcon.it\/librelogo\/wp-json\/wp\/v2\/media?parent=18720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.valcon.it\/librelogo\/wp-json\/wp\/v2\/categories?post=18720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.valcon.it\/librelogo\/wp-json\/wp\/v2\/tags?post=18720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}