Opening and closing polylines

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.    

To close an open polyline

   1   Do one of the following to choose Edit Polyline ():

    On the ribbon, choose Edit > Edit Polyline (in Modify).

    On the menu, choose Modify > Edit Polyline.

    On the Modify toolbar, click the Edit Polyline tool.

    Type editpline and then press Enter.

   2   Select the polyline.

   3   In the prompt box, choose Close.

   4   In the prompt box, choose another option, or choose Done to complete the command.