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When you close a polyline, the program draws a straight polyline segment from the last vertex of the polyline to the first vertex. Opening a polyline removes the closing segment. When you select a polyline for editing, the prompt box displays either the Open or Close option, depending on whether the polyline you select is closed or open.
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Closing an open polyline adds a straight polyline segment between the first ( A ) and last ( B ) vertices. |
| Result. |