Khan/khan-exercises — pull request #71849 by theinternetftw (2013-09-06 23:10:26+00:00)
Title: Small tweaks to earlier graphie geo fix

These are some tweaks to the quad fix that was pushed a while back. The main fix is to avoid #71833, a rare occurrence with figures of sideRatio 1. When testing that fix I saw that obtuse angles (depending on the orientation of the figure) needed a little more room than I gave them the first time, so I added that in as well.