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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 Lune (mathematics) ： ウィキペディア英語版 Lune (geometry) In geometry, a lune is either of two figures, both shaped roughly like a crescent Moon. The word "lune" derives from ''luna'', the Latin word for Moon. ==Plane geometry== In plane geometry, a lune is the concave-convex area bounded by two circular arcs, while a convex-convex area is termed a lens. 〔http://groups.google.com/group/geometry.college/browse_thread/thread/55e2a51789739627?pli=1〕 Formally, a lune is the relative complement of one disk in another (where they intersect but neither is a subset of the other). Alternatively, if A and B are disks, then $L\; =\; A\; -\; A\; \backslash cap\; B$ is a lune. 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「Lune (geometry)」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.