Khan/khan-exercises — pull request #25463 by mwittels (2012-07-05 19:02:51+00:00)
Title: Proofs part1

"Find the bad statement" exercise and proofs.js util. Should now be up-to-date with everything not proof-related...

http://sandcastle.khanacademy.org/media/castles/mwittels:proofsPart1/exercises/geometry_proofs.html