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Q.

Nina draws two angles ∠ABC=45° and ∠PQR=90°. Identify the correct perpendicular lines.

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a

PQ⊥QR

b

AB⊥BC

c

AB⊥PQ

d

BC⊥QR

answer is A.

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Detailed Solution

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The set of lines that make a right angle is perpendicular. Hence PQ is perpendicular to QR. 

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