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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 Icositetragon ： ウィキペディア英語版 Icositetragon In geometry, an icositetragon (or icosikaitetragon or tetracosagon) is a twenty-four-sided polygon or 24-gon. The sum of any icositetragon's interior angles is 3960 degrees. ==Regular icositetragon== The ''regular icositetragon'' is represented by Schläfli symbol and can also be constructed as a truncated dodecagon, t, or a twice-truncated hexagon, tt, or thrice-truncated triangle, ttt. One interior angle in a regular icositetragon is 165°, meaning that one exterior angle would be 15°. The area of a regular icositetragon is: (with ''t'' = edge length) : $A\; =\; 6t^2\; \backslash cot\; \backslash frac\; =\; t^2(2+\backslash sqrt+\backslash sqrt+\backslash sqrt).$ The icositetragon appeared in Archimedes' polygon approximation of pi, along with the hexagon (6-gon), dodecagon (12-gon), tetracontaoctagon (48-gon), and enneacontahexagon (96-gon). 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「Icositetragon」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.