Khan/khan-exercises — Issue #5248: Measuring angles - protractor usage
Author: KhanBugz
Created: 2011-10-31 04:32:39+00:00
State: open
Labels: ie8, ie9, vista

i do not understand how to use the arrows. I am using a laptop, but when I press on the arrows, sometimes it rotates and some times not. Also, it seems to hang up intermittently. ??

[measuring_angles.html?seed=159&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/measuring_angles.html?seed=159&problem=0&debug)

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