In the diagram, POS and ROT re straight lines. OPOR is a parallelogram, |OS| =
MATHEMATICS
WAEC 2019
In the diagram, POS and ROT re straight lines. OPOR is a parallelogram, |OS| = |OT| and
- A. 100°
- B. 120°
- C. 140°
- D. 160°
Correct Answer: A. 100°
Explanation
S\(O\)T = 180\(^o\) - (50 + 50)
= 80\(^o\)
P\(Q\)R = 80\(^o\)
= \(\frac{360^o - 160^o}{2}\) = 100\(^o\)
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