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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 cupola ： ウィキペディア英語版 Gyroelongated triangular cupola In geometry, the gyroelongated triangular cupola is one of the Johnson solids (''J''22). It can be constructed by attaching a hexagonal antiprism to the base of a triangular cupola (''J''3). This is called "gyroelongation", which means that an antiprism is joined to the base of a solid, or between the bases of more than one solid. The gyroelongated triangular cupola can also be seen as a gyroelongated triangular bicupola (''J''44) with one triangular cupola removed. Like all cupolae, the base polygon has twice as many sides as the top (in this case, the bottom polygon is a hexagon because the top is a triangle). ==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 cupola )" from Wolfram Alpha. Retrieved July 22, 2010.〕 $V=(\backslash frac\backslash sqrt+18\backslash sqrt+30\backslash sqrt)a^3\backslash approx3.51605...a^3$ $A=(3+\backslash frac)a^2\backslash approx12.5263...a^2$ 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 cupola」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.