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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 360-gon ： ウィキペディア英語版 360-gon In geometry, a 360-gon (triacosihexacontagon or triacosihexecontagon) is a polygon with 360 sides. The sum of any 360-gon's interior angles is 64440 degrees. ==Regular 360-gon properties== A ''regular 360-gon'' is represented by Schläfli symbol and also can be constructed as a truncated 180-gon, t, or a twice-truncated enneacontagon, tt, or a thrice-truncated tetracontapentagon, ttt. One interior angle in a regular 360-gon is 179°, meaning that one exterior angle would be 1°. The area of a regular 360-gon is (with ) :$A\; =\; 90t^2\; \backslash cot\; \backslash frac$ and its inradius is :$r\; =\; \backslash fract\; \backslash cot\; \backslash frac$ The circumradius of a regular 120-gon is :$R\; =\; \backslash fract\; \backslash csc\; \backslash frac$ Since 360 = 23 × 32 × 5, a regular 360-gon is not constructible using a compass and straightedge,〔(Constructible Polygon )〕 but is constructible if the use of an angle trisector is allowed.〔http://www.math.iastate.edu/thesisarchive/MSM/EekhoffMSMSS07.pdf〕 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「360-gon」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.