Question

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.