In the diagram, POS and ROT are straight lines. OPQR is a...
In the diagram, POS and ROT are straight lines. OPQR is a parallelogram, |OS| = |OT| and ∠OST = 50°. Calculate the value of ∠OPQ.
100o
120o
140o
160o
Correct answer is A
SOT = 180o - (50 + 50)
= 80o
PQR = 80o
= 360o−160o2 = 100o
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