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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 heptagon ： ウィキペディア英語版 heptagon In geometry, a heptagon is a 7-sided polygon or 7-gon. The heptagon is also occasionally referred to as the septagon, using "sept-" (an elision of ''septua-'', a Latin-derived numerical prefix, rather than ''hepta-'', a Greek-derived numerical prefix) together with the Greek suffix "-agon" meaning angle). == Regular heptagon== A regular heptagon, in which all sides and all angles are equal, has internal angles of 5π/7 radians (128.5714286 degrees). Its Schläfli symbol is . 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「heptagon」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.