Khan/khan-exercises — Issue #6731: Congruency postulates - Congruency postulates SORRY!
Author: KhanBugz
Created: 2011-11-20 02:47:14+00:00
State: open
Labels: chrome, win7, wrong-or-unclear

Reporter: atheistkharm

haha so I've realized finally that its my failure to realize that you CAN construct a congruent triangle with SSA. I was just quick to jump to the conclusion that both configurations were not congruent b/c I knew that SSA doesn't deliver. Now I realize that I didn't spend the time to spend the triangles around properly and see if they matched or not before trying the other configuration.

Sorry for the several emails trying to help you fix a problem that didn't exist. I do think however this can be made a little more clear by coloring the sides and angles that are constrained in both the example triangle and the one you manipulate. Maybe also some re-wording of the question.

Anyways again sorry for the emails. Keep up the amazing job!

[congruency_postulates.html?seed=151&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/congruency_postulates.html?seed=151&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/congruency_postulates.html?seed=151&problem=0&debug&activity=%5B%5B%22correct-activity%22%2C%22%5B%5C%22No%5C%22%2C%5B-3.083555865412422%2C0.8368360555282777%5D%2C%5B-0.3054220722546721%2C-0.32029173380087883%5D%2C%5B4.594126980248068%2C4.64600942463512%5D%2C%5B-3.083555865412422%2C0.8368360555282777%5D%5D%22%2C78%5D%5D)

[["No",[-3.083555865412422,0.8368360555282777],[-0.3054220722546721,-0.32029173380087883],[4.594126980248068,4.64600942463512],[-3.083555865412422,0.8368360555282777]]]

Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.120 Safari/535.2

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