Khan/khan-exercises — pull request #26118 by mwittels (2012-07-14 01:46:23+00:00)
Title: translation and rotation exercises

http://sandcastle.khanacademy.org/media/castles/mwittels:nipple/exercises/translations_of_points_and_polygons.html

http://sandcastle.khanacademy.org/media/castles/mwittels:nipple/exercises/rotation_of_polygons.html