Hi,   I have problem to find any point inside closed polyline. The point can't be on edge this polyline. I found example: http://docs.autodesk.com/ACDMAC/2011/ENU/ObjectARX%20Reference/index.html?frmname=topic&frmfile=AcString.html but this is for ARX application and I need for Lisp.   The polyline can be any shape eg. http://forum.cad.pl/download/file.php?id=1622&t=1 - figure on top I have tried with triangles or intersection but without result...   Have someone have any ide