翻訳と辞書 Words near each other ・ Order-5 hexagonal tiling honeycomb ・ Order-5 icosahedral 120-cell honeycomb ・ Order-5 pentagonal tiling ・ Order-5 square tiling ・ Order-5 tesseractic honeycomb ・ Order-6 cubic honeycomb ・ Order-6 dodecahedral honeycomb ・ Order-6 hexagonal tiling ・ Order-6 hexagonal tiling honeycomb ・ Order-6 octagonal tiling ・ Order-6 pentagonal tiling ・ Order-6 square tiling ・ Order-6 tetrahedral honeycomb ・ Order-6 triangular hosohedral honeycomb ・ Order-7 heptagonal tiling ・ Order-7 heptagrammic tiling ・ Order-7 hexagonal tiling honeycomb ・ Order-7 square tiling ・ Order-7 tetrahedral honeycomb ・ Order-7 triangular tiling ・ Order-8 hexagonal tiling ・ Order-8 octagonal tiling ・ Order-8 square tiling ・ Order-8 triangular tiling ・ Order-embedding ・ Order-independent transparency ・ Order-maintenance problem ・ OrderAhead ・ Ordered Bell number ・ Ordered dithering Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Order-7 heptagrammic tiling ： ウィキペディア英語版 Order-7 heptagrammic tiling In geometry, the order-7 heptagrammic tiling is a tiling of the hyperbolic plane by overlapping heptagrams. ==Description== This tiling is a regular star-tiling, and has Schläfli symbol of . The heptagrams forming the tiling are of type , 40px. The overlapping heptagrams subdivide the hyperbolic plane into isosceles triangles, 14 of which form each heptagram. Each point of the hyperbolic plane that does not lie on a heptagram edge belongs to the central heptagon of one heptagram, and is in one of the points of exactly one other heptagram. The winding number of each heptagram around its points is one, and the winding number around the central heptagon is two, so adding these two numbers together, each point of the plane is surrounded three times; that is, the density of the tiling is 3. In the Euclidean plane, a heptagram of type would have angles of 3/7 at its vertices, but in the hyperbolic plane heptagrams can have the sharper vertex angle 2/7 that is needed to make exactly seven other heptagrams meet up at the center of each heptagram of the tiling. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Order-7 heptagrammic tiling」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.