PQR is a triangle in which PQ = PR. Side QP is produced to O such that PQ = QO. Prove that ∠QRP = 90° with the help of a diagram.
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Step-by-step explanation:
angle tita is the equal angle
the last angle is 180 -tita - tita=180-2tita
produced angle 180 - tita
right angle triangle is more appropriate
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