In △ ABC and △ PQR, AB = PQ and ∠B = ∠Q. The two triangles are congruent by SAS criteria if:
Answer & explanation
Correct answer: option 1

According to the question,
In △ABC and △PQR
⇒ AB = PQ
⇒ ∠B = ∠Q
So, angle B is made the side AB and BC and ∠Q is made up by the side PQ and QR
So, BC must be equal to QR to make these two triangle congruent by SAS rule.