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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Order-2 apeirogonal tiling ： ウィキペディア英語版 Order-2 apeirogonal tiling In geometry, an order-2 apeirogonal tiling, apeirogonal dihedron, or infinite dihedron〔Conway (2008), p. 263〕 is a tiling of the plane consisting of two apeirogons. It may be considered an improper regular tiling of the Euclidean plane, with Schläfli symbol . Two apeirogons, joined along all their edges, can completely fill the entire plane as an apeirogon is infinite in size and has an interior angle of 180°, which is half of a full 360°. ==Related tilings and polyhedra== The apeirogonal tiling is the arithmetic limit of the family of dihedra , as ''p'' tends to infinity, thereby turning the dihedron into a Euclidean tiling. Similarly to the uniform polyhedra and the uniform tilings, eight uniform tilings may be based from the regular apeirogonal tiling. The rectified and cantellated forms are duplicated, and as two times infinity is also infinity, the truncated and omnitruncated forms are also duplicated, therefore reducing the number of unique forms to four: the apeirogonal tiling, the apeirogonal hosohedron, the apeirogonal prism, and the apeirogonal antiprism. !t1 !t1,2 !t2 !t0,2 !t0,1,2 !s |- !Coxeter ! ! ! ! ! ! ! ! |- align=center |Image Vertex figure |60px |60px ∞.∞ |60px ∞.∞ |60px 4.4.∞ |60px |60px 4.4.∞ |60px 4.4.∞ |60px 3.3.3.∞ |} 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-2 apeirogonal 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.