Khan/khan-exercises — Issue #9407: Parallel lines 1 - help
Author: KhanBugz
Created: 2011-12-23 20:18:05+00:00
State: open
Labels: chrome, win7, wrong-or-unclear

i need help

[parallel_lines_1.html?seed=128&problem=4 (same_side_exterior_angles)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/parallel_lines_1.html?seed=128&problem=4&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/parallel_lines_1.html?seed=128&problem=4&debug&activity=%5B%5D)

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Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.63 Safari/535.7

MathJax is loaded, ready, queue length: 0