If triangles ABC and PQR are both isosceles with AB=AC and PQ=PR, respectively. If also AB=PQ and BC=QR and angle B=50°, then what is the measure of angle R?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 50°
AB = AC
PQ = PR
angle B = angle C = 50º
angle Q = angle R
AB = PQ
BC = QR
Therefore, AC = PR
by using SSS
triangle ABC is congruent to triangle PQR
Thus, angle B = angle C = angle R = 50º