Khan/khan-exercises — Issue #15086: Quadrilateral angles - Needs Trapezoid Assumption?
Author: KhanBugz
Created: 2012-03-01 04:51:32+00:00
State: open
Labels: firefox, leopard, wrong-or-unclear

The information IS enough to determine a unique quadrilateral, but without assuming that this is a trapezoid, this problem is incredibly hard. Put in the parallel assumptions or right angles!

[quadrilateral_angles.html?seed=67&problem=trapezoid](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quadrilateral_angles.html?seed=67&problem=trapezoid&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quadrilateral_angles.html?seed=67&problem=trapezoid&debug&activity=%5B%5B%22correct-activity%22%2C%22%5C%22142%5C%22%22%2C25%5D%5D)

["142"]

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5; rv:6.0.2) Gecko/20100101 Firefox/6.0.2

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