Khan/khan-exercises — Issue #6156: Quadrilateral angles -  How do I know that this figure is a trapezoid? confused.
Author: KhanBugz
Created: 2011-11-12 05:21:19+00:00
State: open
Labels: leopard, safari

Reporter: sgtseatbelt@hotmail.com

the figure has side lengths 2.3, 3.9, 2.4, 4.7 and one angle is 75 degrees. It is definitely not an isosceles trapezoid. How do I know it is a trapezoid? How do I know that the sides that are 3.9 and 4.7 are parallel to each other?

[quadrilateral_angles.html?seed=181&problem=trapezoid](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quadrilateral_angles.html?seed=181&problem=trapezoid&debug)

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