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9. Two lines l and m are perpendicular to the same line n. Are l and m 2
perpendicular to each other? Give reason for your answer.
Solution:
No, since, lines l and m are perpendicular to the line n.
∠1 = ∠2 = 90° [∴ l ⊥ n and m ⊥ n]
It implies that these are corresponding angles.
Hence, l || m.
10. In the figure, if OP || RS, ∠OPQ = 110° and ∠QRS = 130°, Find ∠PQR. 3
Solution:
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