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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 Gyroelongated triangular bicupola ： ウィキペディア英語版 Gyroelongated triangular bicupola In geometry, the gyroelongated triangular bicupola is one of the Johnson solids (''J''44). As the name suggests, it can be constructed by gyroelongating a triangular bicupola (either ''J''27 or the cuboctahedron) by inserting a hexagonal antiprism between its congruent halves. The gyroelongated triangular bicupola is one of five Johnson solids which are chiral, meaning that they have a "left-handed" and a "right-handed" form. In the illustration to the right, each square face on the bottom half of the figure is connected by a path of two triangular faces to a square face above it and to the right. In the figure of opposite chirality (the mirror image of the illustrated figure), each bottom square would be connected to a square face above it and to the left. The two chiral forms of ''J''44 are not considered different Johnson solids. ==Formulae== The following formulae for volume and surface area can be used if all faces are regular, with edge length ''a'':〔Stephen Wolfram, "(Gyroelongated triangular bicupola )" from Wolfram Alpha. Retrieved July 30, 2010.〕 $V=\; \backslash sqrt\; (\backslash frac+\backslash sqrt)a^2\; \backslash approx\; 14.6603...a^2$ 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「Gyroelongated triangular bicupola」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.