翻訳と辞書 Words near each other ・ Truncated pentahexagonal tiling ・ Truncated pentakis dodecahedron ・ Truncated power function ・ Truncated railway station termini ・ Truncated regression model ・ Truncated rhombicosidodecahedron ・ Truncated rhombicuboctahedron ・ Truncated spur ・ Truncated square antiprism ・ Truncated square tiling ・ Truncated square trapezohedron ・ Truncated tesseract ・ Truncated tesseractic honeycomb ・ Truncated tetraapeirogonal tiling ・ Truncated tetrahedral prism ・ Truncated tetrahedron ・ Truncated tetraheptagonal tiling ・ Truncated tetrahexagonal tiling ・ Truncated tetraoctagonal tiling ・ Truncated tetrapentagonal tiling ・ Truncated trapezohedron ・ Truncated triakis tetrahedron ・ Truncated triangular trapezohedron ・ Truncated triapeirogonal tiling ・ Truncated triheptagonal tiling ・ Truncated trihexagonal tiling ・ Truncated trioctagonal tiling ・ Truncatella ・ Truncatella (fungus) ・ Truncatella (gastropod) 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 Truncated tetrahedron ： ウィキペディア英語版 Truncated tetrahedron In geometry, the truncated tetrahedron is an Archimedean solid. It has 4 regular hexagonal faces, 4 equilateral triangle faces, 12 vertices and 18 edges (of two types). It can be constructed by truncating all 4 vertices of a regular tetrahedron at one third of the original edge length. A deeper truncation, removing a tetrahedron of half the original edge length from each vertex, is called rectification. The rectification of a tetrahedron produces an octahedron. A ''truncated tetrahedron'' is the Goldberg polyhedron GIII(1,1), containing triangular and hexagonal faces. A ''truncated tetrahedron'' can be called a cantic cube, with Coxeter diagram, , having half of the vertices of the cantellated cube (rhombicuboctahedron), . There are two dual positions of this construction, and combining them creates the uniform compound of two truncated tetrahedra. ==Area and volume== The area ''A'' and the volume ''V'' of a truncated tetrahedron of edge length ''a'' are: :$A\; =\; 7\backslash sqrta^2\; \backslash approx\; 12.12435565a^2$ :$V\; =\; \backslash frac\backslash sqrta^3\; \backslash approx\; 2.710575995a^3.$ 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「Truncated tetrahedron」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.