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Question

In the given figure, find the measure of RQT if PQ = QR and QPR=60.

A
60
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B
140
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C
120
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D
100
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Solution

The correct option is C 120
Δ PQR is isosceles since PQ = QR.
QPR=QRP=60
RQT is the exterior angle of ΔPQR which is equal to the sum of interior opposite angles P and R.
Hence, RQT=60+60=120.

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