Which postulate can be used to prove that ΔQRT and ΔSRT are congruent?
Given: Q̅R̅ = S̅R̅ and S̅T̅ = Q̅T̅
Diagram -
http://oi49.tinypic.com/ig94c5.jpg

A) not congruent
B) ASA
C) SAS
D) SSS

Thank you.

Question

Which postulate can be used to prove that ΔQRT and ΔSRT are congruent?
Given: Q̅R̅ = S̅R̅ and S̅T̅ = Q̅T̅
Diagram -
http://oi49.tinypic.com/ig94c5.jpg

A) not congruent
B) ASA
C) SAS
D) SSS

Thank you.

e.mccormick · Answer

They share a side, and by the laws of angles on lines, what do you know about the angles of the two triangles?

anonymous · Answer

They share a side, and their two other sides are given to be congruent... who needs angles? ^.^

e.mccormick · Answer

Hehe.  True.  I mentally skipped that part while lookin at the pic.  My bad.

anonymous · Answer

I wonder why it's Q̅R̅ = S̅R̅ and  S̅T̅ = Q̅T̅
Given the picture
Q̅R̅ =  S̅T̅ 
and
S̅R̅  = Q̅T̅
would make more sense :)

anonymous · Answer

Is it D?

e.mccormick · Answer

Yes, they effectivly give you all three sides, which is why D is the correct choice.  Two they tell you flat out and one is in th picture.

anonymous · Answer

Thanks!

e.mccormick · Answer

np.  Don't have too much fun!