Khan/khan-exercises — Issue #9714: Congruency postulates - congruency postulates
Author: KhanBugz
Created: 2011-12-28 18:30:56+00:00
State: open
Labels: hard, ie8, ie9, win7

can't get the triangle angles to change in order to construct an incongruent triangle. I've had trouble with this in the past.

[congruency_postulates.html?seed=59&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/congruency_postulates.html?seed=59&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/congruency_postulates.html?seed=59&problem=0&debug&activity=%5B%5B%22correct-activity%22%2C%22%5B%5C%22No%5C%22%2C%5B4.119283494554878%2C2.923143971535781%5D%2C%5B3.766237044466598%2C5.672047943926142%5D%2C%5B-0.6740007710051339%2C1.3361966794474637%5D%2C%5B4.119283494554878%2C2.923143971535781%5D%5D%22%2C75%5D%2C%5B%22correct-activity%22%2C%22%5B%5C%22No%5C%22%2C%5B2.2787391660398723%2C3.333573033430108%5D%2C%5B3.766237044466598%2C5.672047943926142%5D%2C%5B-2.420364199242143%2C5.180842185645576%5D%2C%5B2.2787391660398723%2C3.333573033430108%5D%5D%22%2C16%5D%2C%5B%22correct-activity%22%2C%22%5B%5C%22No%5C%22%2C%5B5.986664607518469%2C3.7445656825262445%5D%2C%5B3.3662370444665974%2C4.647047943926141%5D%2C%5B5.283622399308928%2C-1.2554050585688951%5D%2C%5B5.986664607518469%2C3.7445656825262445%5D%5D%22%2C30%5D%5D)

[["No",[4.119283494554878,2.923143971535781],[3.766237044466598,5.672047943926142],[-0.6740007710051339,1.3361966794474637],[4.119283494554878,2.923143971535781]],["No",[2.2787391660398723,3.333573033430108],[3.766237044466598,5.672047943926142],[-2.420364199242143,5.180842185645576],[2.2787391660398723,3.333573033430108]],["No",[5.986664607518469,3.7445656825262445],[3.3662370444665974,4.647047943926141],[5.283622399308928,-1.2554050585688951],[5.986664607518469,3.7445656825262445]]]

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C)

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