NonEuclid

NonEuclid is a Software Simulation offering Straightedge and Compass Constructions in Hyperbolic Geometry (a geometry of Einstein's General Relativity Theory and Curved Hyperspace) for use in High School and Undergraduate Education.

This web site provides the platform independent, NonEuclid software (written in 100% pure Java) together with a 25 page, illustrated, hypertext introductory explanation of Hyperbolic Geometry.
NonEuclid has moved.
The new site is: http://math.rice.edu/~joel/NonEuclid/