A line A1A2A3 ... An is a figure that consists of points A1, A2, A3, ..., An and segments A1A2, A2A3, ..., An-1An connecting them. The points A1, A2, A3, ..., An are the vertices of the polyline , A1A2, A2A3, ..., An-1An are the links of the polyline . If a polyline has no intersections, then such a polyline is called a simple one . If a polyline has intersections, then it is called polyline with self-intersection . |
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