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Mathematics 9 Online
OpenStudy (anonymous):

Which postulate can be used to prove triangle QTR is congruent to triangle STR? Here's the image. http://puu.sh/6Fd0V.png From what I understand, we only know that angle Q and S are congruent, as well as side TS and QT, but that isn't enough to determine an answer, is it? The answers are HL, SAS, AAS, and Not Congruent.

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