{"id":2537,"date":"2013-07-07T16:32:49","date_gmt":"2013-07-07T15:32:49","guid":{"rendered":"http:\/\/t-machine.org\/?p=2537"},"modified":"2013-07-07T16:36:46","modified_gmt":"2013-07-07T15:36:46","slug":"gamesthatteach-lets-play-ancient-greek-geometry","status":"publish","type":"post","link":"http:\/\/new.t-machine.org\/index.php\/2013\/07\/07\/gamesthatteach-lets-play-ancient-greek-geometry\/","title":{"rendered":"GamesThatTeach: &#8220;Let&#8217;s Play: Ancient Greek Geometry&#8221;"},"content":{"rendered":"<p>Excellent game for practicing circle\/line\/compass\/ruler construction (as loved by junior-school maths exam writers): <a href=\"http:\/\/sciencevsmagic.net\/geo\/\">The regular polygons have been kidnapped by ninjas. Are you a bad enough dude\/tte to construct the regular polygons with nothing but a virtual compass and straightedge?<\/a><\/p>\n<blockquote><p>\n&#8220;It\u2019s a Compass and Straightedge tool\/puzzle game written in JavaScript. I\u2019ve always thought Geometric Construction felt like a puzzle, so to me this pairing was quite natural. Compass and Straight edge is a technique for constructing shapes out of circles, straight lines, and their intersection points. You can read the wikipedia here \u2013 but watch out, some of the gifs are spoilers for the game.&#8221; &#8211; <a href=\"http:\/\/blog.sciencevsmagic.net\/science\/lets-play-ancient-greek-geometry\/\">http:\/\/blog.sciencevsmagic.net\/science\/lets-play-ancient-greek-geometry\/<\/a>\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"http:\/\/blog.sciencevsmagic.net\/wp-content\/uploads\/2013\/06\/geo.png\"\/><\/p>\n<p>The exciting thing here is that it shows how to create &#8220;perfect&#8221; polygons &#8211; not estimated, not relying on a pre-made protractor \/ angle measurer, but 100% accurate, using rules of geometrical construction. For instance, here&#8217;s how to draw a perfect pentagon, without any tools beyond the compass\/pencil\/straight edge:<\/p>\n<p><a href=\"http:\/\/sciencevsmagic.net\/geo\/#0A1.1A0.1L0.2L3.0L4.4A1.1A4.12L0.17A0.17L21.2L29.0L29.0A6.29A51.N.0L29.29L6.6L0.60A6.29A51.60L73.73A60.6L73.73A6.6A73.6A60.6L161.N.161L6.6L60.60L73.161A6.73A60.142L161.73L142\">http:\/\/sciencevsmagic.net\/geo\/#0A1.1A0.1L0.2L3.0L4.4A1.1A4.12L0.17A0.17L21.2L29.0L29.0A6.29A51.N.0L29.29L6.6L0.60A6.29A51.60L73.73A60.6L73.73A6.6A73.6A60.6L161.N.161L6.6L60.60L73.161A6.73A60.142L161.73L142<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Excellent game for practicing circle\/line\/compass\/ruler construction (as loved by junior-school maths exam writers): The regular polygons have been kidnapped by ninjas. Are you a bad enough dude\/tte to construct the regular polygons with nothing but a virtual compass and straightedge? &#8220;It\u2019s a Compass and Straightedge tool\/puzzle game written in JavaScript. I\u2019ve always thought Geometric Construction [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[65],"tags":[],"_links":{"self":[{"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/posts\/2537"}],"collection":[{"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/comments?post=2537"}],"version-history":[{"count":7,"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/posts\/2537\/revisions"}],"predecessor-version":[{"id":2543,"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/posts\/2537\/revisions\/2543"}],"wp:attachment":[{"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/media?parent=2537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/categories?post=2537"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/tags?post=2537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}