Khan/khan-exercises — Issue #14090: Quadrilateral angles - I think I found a bug.
Author: KhanBugz
Created: 2012-02-17 19:23:22+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

Reporter: harry.ahn@gmail.com

Quadrilateral angles

For parallelogram of 2.2 4.5 2.2 4.5 sides and an angle of 91 it rejected 89 for the other angle.

And solution states this
"This figure is an isosceles trapezoid."

[quadrilateral_angles.html?seed=91&problem=isoscelesTrap2](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quadrilateral_angles.html?seed=91&problem=isoscelesTrap2&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quadrilateral_angles.html?seed=91&problem=isoscelesTrap2&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%2289%5C%22%22%2C13%5D%2C%5B%22hint-activity%22%2C%220%22%2C121%5D%2C%5B%22hint-activity%22%2C%220%22%2C122%5D%5D)

["89"]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0.2) Gecko/20100101 Firefox/10.0.2

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