The isosceles triangle theorem says "if two sides of a triangle are congruent, then the angles opposite those sides are congruent".

If you are using this figure to prove the isosceles triangle theorem, which of the foloowing would be the best strategy?

(picture) http://i.imgur.com/jnfXqrs.png

plz give me the best answer.

Question

The isosceles triangle theorem says "if two sides of a triangle are congruent, then the angles opposite those sides are congruent". 

If you are using this figure to prove the isosceles triangle theorem, which of the foloowing would be the best strategy?

(picture) http://i.imgur.com/jnfXqrs.png

plz give me the best answer.

ybarrap · Answer

C, because then you know that PS = SR, QS = QS (of course) and PQ=QR (given), then triangles are congruent and thus angle QPS equals angle QRS and the triangle PQR is then isosceles

anonymous · Answer

It is correct. thank you so much. ;)