Khan/khan-exercises — Issue #13874: Quadrilateral angles - Karan
Author: KhanBugz
Created: 2012-02-15 12:12:04+00:00
State: open
Labels: hard, ie8, win7

Reporter: ashok.sharma4466@gmail.com

[quadrilateral_angles.html?seed=61&problem=parallelogram2](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quadrilateral_angles.html?seed=61&problem=parallelogram2&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quadrilateral_angles.html?seed=61&problem=parallelogram2&debug&activity=%5B%5D)

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