Triangles ABC and PQR are both isosceles with AB = AC and PQ = PR respectively. If also, AB = PQ and BC = QR, are the two triangles congruent? Which condition do you use? IF ∠B=50°, what is the measure of ∠R?

Triangles ABC and PQR are both isosceles with AB = AC and PQ = PR resp

1.	Triangles ABC and PQR are both isosceles with AB = AC and PQ = PR respectively. If also, AB = PQ and BC = QR, are the two triangles congruent? Which condition do you use? IF ∠B=50°, what is the measure of ∠R?
Answer» Triangles ABC and PQR are both isosceles with AB = AC and PQ = PR respectively. If also, AB = PQ and BC = QR, are the two triangles congruent? Which condition do you use? IF $∠ B = 50 °$ , what is the measure of $∠ R$ ?