Khan/khan-exercises — Issue #8999: Quadrilateral angles - Can't see "x"
Author: KhanBugz
Created: 2011-12-19 18:56:58+00:00
State: open
Labels: safari, wrong-or-unclear, xp

please make "x" visible

[quadrilateral_angles.html?seed=146&problem=isoscelesTrap2](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quadrilateral_angles.html?seed=146&problem=isoscelesTrap2&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quadrilateral_angles.html?seed=146&problem=isoscelesTrap2&debug&activity=%5B%5D)

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