翻訳と辞書 Words near each other ・ Decadent (U.D.O. album) ・ Decadent Action ・ Decadent Evil ・ Decadent Evil II ・ Decadent movement ・ Decadent Sound of Faye ・ Decadentism ・ Decades (TV network) ・ Decades Apart ・ Decades of Dollars ・ Decades of the New World ・ Decades of Worship ・ Decades Rock Live! ・ Decadocrinus ・ Decaffeination ・ Decagon ・ Decagon Devices ・ Decagonal antiprism ・ Decagonal bipyramid ・ Decagonal number ・ Decagonal prism ・ Decagonal trapezohedron ・ Decagram ・ Decagram (geometry) ・ Decagrammic antiprism ・ Decagrammic prism ・ Decahedron ・ Decahydroxycyclopentane ・ Decaisne ・ Decaisnea 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 Decagon ： ウィキペディア英語版 Decagon In geometry, a decagon is a 10-sided polygon or 10-gon.〔.〕 ==Regular decagon== A ''regular decagon'' has all sides of equal length and each internal angle will always be equal to 144°.〔 Its Schläfli symbol is 〔.〕 and can also be constructed as a truncated pentagon, t, a quasiregular decagon alternating two types of edges. The area of a regular decagon is: (with ''t'' = edge length)〔. Note that this source uses ''a'' as the edge length and gives the argument of the cotangent as an angle in degrees rather than in radians.〕 :$A\; =\; \backslash fract^2\; \backslash cot\; \backslash frac\; =\; \backslash frac\; \backslash sqrt+\backslash cos\backslash tfrac\backslash right),$ and it can be written algebraically as :$d=t\backslash sqrt\{5+2\backslash sqrt\{5\}\}.$ 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「Decagon」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.