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Concave polygon : ウィキペディア英語版 | Concave polygon
A simple polygon that is not convex is called concave,〔.〕 non-convex or reentrant.〔.〕 A simple concave polygon will always have an interior angle with a measure that is greater than 180 degrees.〔(Definition and properties of concave polygons with interactive animation. )〕 It is always possible to partition a concave polygon into a set of convex polygons. A polynomial-time algorithm for finding a decomposition into as few convex polygons as possible is described by .〔.〕 ==Notes==
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「Concave polygon」の詳細全文を読む
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