Hy!I have to draw perpendicular lines in an arc from A and B dots.Here an illustrative drawing:http://kepfeltoltes.hu/100316/pelda_www.kepfeltoltes.hu_.pngI should draw the green lines with AutoCAD macro (with VBA, not Lisp).A and B dot and the polyline is known.Can somebody help with his problem solution?Ahead thank you for the answer!(Excuse me because of the weak English language knowledge)