kseg - explore Euclidean geometry
kseg files ...
KSEG allows you to interactively create a geometrical construction,
similar to what you can do with a straightedge and compass. Points may
be inserted on the page with right mouse-button clicks, and then used
to form segments, lines, circles, or other geometrical objects. At any
time you can drag existing points around, and watch how the constructed
Ilya Baran <firstname.lastname@example.org> http://www.mit.edu/~ibaran/