翻訳と辞書 Words near each other ・ Compound of five icosahedra ・ Compound of five nonconvex great rhombicuboctahedra ・ Compound of five octahedra ・ Compound of five octahemioctahedra ・ Compound of five rhombicuboctahedra ・ Compound of five small cubicuboctahedra ・ Compound of five small rhombihexahedra ・ Compound of five small stellated dodecahedra ・ Compound of five stellated truncated hexahedra ・ Compound of five tetrahedra ・ Compound of five tetrahemihexahedra ・ Compound of five truncated cubes ・ Compound of five truncated tetrahedra ・ Compound of four hexagonal prisms ・ Compound of four octahedra ・ Compound of four octahedra with rotational freedom ・ Compound of four tetrahedra ・ Compound of four triangular prisms ・ Compound of great icosahedron and great stellated dodecahedron ・ Compound of octahedra ・ Compound of six cubes with rotational freedom ・ Compound of six decagonal prisms ・ Compound of six decagrammic prisms ・ Compound of six pentagonal antiprisms ・ Compound of six pentagonal prisms ・ Compound of six pentagrammic antiprisms ・ Compound of six pentagrammic crossed antiprisms ・ Compound of six pentagrammic prisms ・ Compound of six square antiprisms ・ Compound of six tetrahedra 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 Compound of four octahedra with rotational freedom ： ウィキペディア英語版 Compound of four octahedra with rotational freedom This uniform polyhedron compound is a symmetric arrangement of 4 octahedra, considered as triangular antiprisms. It can be constructed by superimposing four identical octahedra, and then rotating each by an equal angle θ about a separate axis passing through the centres of two opposite octahedral faces, in such a way as to preserve pyritohedral symmetry. Superimposing this compound with a second copy, in which the octahedra have been rotated by the same angle θ in the opposite direction, yields the compound of eight octahedra with rotational freedom. When θ=0, all four octahedra coincide. When θ is 60 degrees, the more symmetric compound of four octahedra (without rotational freedom) arises. In another notable case (pictured), for a certain intermediate value of θ in which 24 of the triangles form coplanar pairs, the compound assumes the form of the compound of five octahedra with one of the octahedra removed. ==References== * . 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「Compound of four octahedra with rotational freedom」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.