Question

IN Triangle PQR, if PQ =QR and LQ=100, the Angle R = ?​

Answer 1

Answer: 40

Step-by-step explanation:

GIVEN = PQ = QRQ = 100°AS PQ AND QR ARE EQUAL

SO,  BY THEOREM ANGLES OPPOSITE TO EQUAL SIDES ARE EQUAL

SO, WE CAN SAY THAT ANGLE P = ANGLE R = XTHEREFORE BY ANGLE SUM PROPERTY OF THE TRIANGLE,

ANGLE P + ANGLE Q + ANGLE R = 180°X + 100 + X = 180°2X = 180 - 1002X

80°X = 40°

Answer 2

Answer:

In triangle PQR, if opposite sides are equal then opposite angles are also equal then

r+p+q=180°

r+p=80°

r=p=40°...

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