**Polygons | Article about Polygons by The Free Dictionary**
https://encyclopedia2.thefreedictionary.com/Polygons

a closed broken line. More precisely, a polygon is a curve consisting of n line segments that connect arbitrary points A 1, A 2, A 3 …, A n−1, An in such a way that every point is connected with the next one and the last point with the first one (see Figure l,a). The points A 1, A 2 … , A n are said to be the vertices of the polygon, and the segments A 1, A 2, A 2, A 3 …, A n −A n ...

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