Are there any good programs for drawing geometrical pictures? I mean that has functions for lets say creating circumcircles, marking centroids/circumcentres/Feuerbachpoints etc
Ok. What i am looking for is basically a program that can be used to create pictures for solutions/proofs of problems in euclidean geometry. But il check these out, thanks.
If you are looking for open source software, why don't you look at sourceforge web page. They host thousands of opensource software, which many are also compiled for windows.