Khan/khan-exercises — pull request #24458 by xymostech (2012-06-21 01:09:29+00:00)
Title: Fix bug with checking answers in congruent angles

Fix a bug with checking the wrong angles.

Sandcastle: http://sandcastle.khanacademy.org/media/castles/xymostech:congruency-fix/exercises/congruent_angles.html