AutoCad - Combine Line Segments And Arcs Into One Polyline (2002/2004/2005/2006)
You can change any line or arc into a polyline. Start the PEDIT command and choose any line or arc. At the "Object selected is not a polyline. Do you want to turn it into one? <Y>" prompt, press Enter to accept the default and turn the object into a polyline. (To suppress this prompt, change the PEDITACCEPT system variable to 1. Any non-polyline objects that you select for the PEDIT command automatically become polylines.) Next, use the Join option of the PEDIT command and select the other lines or arcs. Note that the individual lines and arcs must connect exactly end to end. However, if you use the Multiple option, you can even join lines that aren't exactly touching.