{"id":1177,"date":"2026-09-18T05:00:00","date_gmt":"2026-09-17T20:00:00","guid":{"rendered":"https:\/\/yamamath.org\/?p=1177"},"modified":"2026-07-14T16:50:53","modified_gmt":"2026-07-14T07:50:53","slug":"1220_%e5%a4%a712%e9%9d%a2%e5%8d%8a20%e9%9d%a2%e4%bd%93-5-roman-chijner","status":"publish","type":"post","link":"https:\/\/yamamath.org\/?p=1177","title":{"rendered":"1220_\u592712\u9762\u534a20\u9762\u4f53 (5) Roman Chijner"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

\u3000Roman Chijner_material-TruncatedGD from icasa.JPG
\u3000—–—–<\/em>—–<\/p>\n\n\n\n

\u3000GeoGebra \u306b<\/p>\n\n\n\n

\u300eTruncated Great Dodecahedron from Truncated Icosahedron
\u3000\u3000 \u4f5c\u6210\u8005:Roman Chijner\u300f\u3000<\/p>\n\n\n\n

\u3068\u3044\u3046\u4f5c\u54c1\u304c\u3042\u308a\u307e\u3059\u3002\uff08\u5148\u982d\u56f3\uff09<\/p>\n\n\n\n

\u3000—–—–<\/em>—–<\/p>\n\n\n\n

\u3000\u4f5c\u54c1\u306b\u306f\u305f\u304f\u3055\u3093\u306e\u30c1\u30a7\u30c3\u30af\u30dc\u30c3\u30af\u30b9\u304c\u3064\u3044\u3066\u304a\u308a\uff0c\u30c1\u30a7\u30c3\u30af\u3057\u305f\u3053\u3068\u306b\u3088\u308b\u591a\u9762\u4f53\u306e\u5909\u5316\u3092\u5373\u5ea7\u306b\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u5909\u5316\u3092\u81ea\u52d5\u3067\u89b3\u5bdf\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

\u3000\u4f5c\u54c1\u4e0b\u306b\u793a\u3055\u308c\u3066\u3044\u305f\u306e\u306f\u5909\u5316\u306e\u9014\u4e2d\u306e\u7279\u5fb4\u7684\u306a\u72b6\u614b\u3092\u304d\u308d\u304f\u3057\u305f\u3082\u306e\u3002
\u7e26\u9577\u3067\u3057\u305f\u306e\u3067-90\u00b0\u56de\u8ee2\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

\u3000\u3000\u3000Roman Chijner_material-b3d5qkyh-90.jpg<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u3000—–—–<\/em>—–<\/p>\n\n\n\n

\u3000\u300c\u592712\u9762\u4f53\u300d\u306f\u300c\u6b6320\u9762\u4f53\u306e\u6b633\u89d2\u5f62\u306e\u9762\u3092\u305d\u308c\u305e\u308c\u6398\u308a\u8fbc\u3093\u3060\u300d\u3068\u6349\u3048\u308b\u3068\u304d\uff0c\u5927\u4e8c\u5341\u9762\u4f53\u306e\u51f8\u5305\u304c\u6b6320\u9762\u4f53\u3067\u3042\u308b\u3053\u3068\u306f\u5373\u5ea7\u306b\u9837\u3051\u307e\u3059\u3002<\/p>\n\n\n\n

\u3000\u592712\u9762\u4f53\u306e\u5207\u9802\u3092\u7d9a\u3051\u306612\u30fb12\u9762\u4f53\u306b\u306a\u3063\u305f\u3068\u304d\uff0c
\uff08Great dodecahemicosahedron \u3084 Small dodecahemikosahedron \u3082\u540c\u69d8\u306b\uff09
\u305d\u308c\u3089\u306e\u51f8\u5305\u304c20\u30fb12\u9762\u4f53\uff08Icosidodecahedron\uff09\u3068\u306a\u308b\u3053\u3068\u3082\u5206\u304b\u3063\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

\u3000\u3000\u3000\u4f5c\u6210\u8005_Roman Chijner.JPG<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u3000—–—–<\/em>—–<\/p>\n\n\n\n

\u3000Wolfram MathWorld \u306e \u300cIcosidodecahedron\u300d\u306b\u51f8\u5305\u306b\u95a2\u3059\u308b\u4ee5\u4e0b\u306e\u753b\u50cf\u4e00\u89a7\u3092\u898b\u3064\u3051\u307e\u3057\u305f\u3002\u82f1\u6587\u306b\u306f<\/p>\n\n\n\n

\u2026\u3000The regular icosidodecahedron is the convex hull of the cube-octahedron 5-compound, dodecadodecahedron, great dodecahemicosahedron, great dodecahemidodecahedron, great icosidodecahedron, great icosihemidodecahedron, third icosahedron stellation hull, octahedron 5-compound, small dodecahemicosahedron, small dodecahemidodecahedron, and small icosihemidodecahedron.\u3000\u2026<\/p>\n\n\n\n

\u3068\u66f8\u3044\u3066\u3042\u3063\u305f\u306e\u3067\u3059\u304c\u65e5\u672c\u8a9e\u8a33\u3067\u306f\u591a\u9762\u4f53\u306e\u540d\u524d\u304c\u5168\u304f\u306e\u4e0d\u5b8c\u5168\u3067\u3057\u305f\u3002Wikipedia \u306e\u300cIcosidodecahedron\u300d\u306b\u3042\u3063\u305f\u300c\u4e8c\u5341\u30fb\u5341\u4e8c\u9762\u4f53\u300d\u304b\u3089\u300c\u5c0f\u5341\u4e8c\u9762\u534a\u5341\u4e8c\u9762\u4f53\u300d\u3078\u3068\u30ea\u30f3\u30af\u3092\u8fbf\u3063\u3066<\/p>\n\n\n\n

\u300c\u540c\u3058\u67a0\u3092\u6301\u3064\u7acb\u4f53\u300d\u3067\u30ea\u30b9\u30c8\u3055\u308c\u305f\u4e2d\u3067\u300c\u753b\u50cf\u30fb\u540d\u524d\u30fb\u7279\u5fb4\u300d\u306a\u3069\u3092\u7a81\u304d\u5408\u308f\u305b\u3066\u3044\u308b\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n\n\n\n

\u3000\u3000\u3000s640 \u51f8\u5305\u304cIcosidodecahedron.jpg<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u3010\u6570\u5b66\u306e\u8a71\u984c\u3011<\/p>\n","protected":false},"excerpt":{"rendered":"

\u3000Roman Chijner_material-TruncatedGD from icasa.JPG\u3000—–—–—– \u3000GeoGebra \u306b \u300eTru […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-1177","post","type-post","status-publish","format-standard","hentry","category-4"],"_links":{"self":[{"href":"https:\/\/yamamath.org\/index.php?rest_route=\/wp\/v2\/posts\/1177","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yamamath.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yamamath.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yamamath.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yamamath.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1177"}],"version-history":[{"count":1,"href":"https:\/\/yamamath.org\/index.php?rest_route=\/wp\/v2\/posts\/1177\/revisions"}],"predecessor-version":[{"id":1182,"href":"https:\/\/yamamath.org\/index.php?rest_route=\/wp\/v2\/posts\/1177\/revisions\/1182"}],"wp:attachment":[{"href":"https:\/\/yamamath.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1177"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yamamath.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1177"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yamamath.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1177"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}