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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 Small dodecahemidodecacron ： ウィキペディア英語版 Small dodecahemidodecacron In geometry, the small dodecahemidodecacron is the dual of the small dodecahemidodecahedron, and is one of nine dual hemipolyhedra. It appears visually indistinct from the small icosihemidodecacron. Since the hemipolyhedra have faces passing through the center, the dual figures have corresponding vertices at infinity; properly, on the real projective plane at infinity. In Magnus Wenninger's ''Dual Models'', they are represented with intersecting prisms, each extending in both directions to the same vertex at infinity, in order to maintain symmetry. In practice the model prisms are cut off at a certain point that is convenient for the maker. Wenninger suggested these figures are members of a new class of stellation figures, called ''stellation to infinity''. However, he also suggested that strictly speaking they are not polyhedra because their construction does not conform to the usual definitions. The small dodecahemidodecacron can be seen as having six vertices at infinity. ==References== * (Page 101, Duals of the (nine) hemipolyhedra) 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「Small dodecahemidodecacron」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.