Khan/khan-exercises — Issue #9985: Triangle angles 1 - Add in X=
Author: KhanBugz
Created: 2012-01-01 18:25:11+00:00
State: open
Labels: firefox, other, win7

Reporter: christilin@msn.com

link to #9936. Title describe what needs to be done.

[triangle_angles_1.html?seed=169&problem=isosceles1](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/triangle_angles_1.html?seed=169&problem=isosceles1&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/triangle_angles_1.html?seed=169&problem=isosceles1&debug&activity=%5B%5B%22correct-activity%22%2C%22%5C%2280%5C%22%22%2C17%5D%5D)

["80"]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20100101 Firefox/8.0

MathJax is loaded, ready, queue length: 0