From time to time I need to draw some circles; and I need them to be tangent to other circles, lines or both, to contain a specific point, or to have a precise radius. Many years ago, before I started using ArchiCAD, I could easily do all this with A...

hi! i work with archicad 11 on windows vista and i need to draw a cycloid; is there a way to do it? is there any generator? thank you...