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Question

In the figure, PQ || RS, TR|| QU and PTR=42. Then QUR is equal to:

A
148
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B
138
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C
38
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D
128
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Solution

The correct option is B 138
Since PQ||RS and TR is a transversal,
PTR=TRS (Alternate interior angles are equal)
Or TRS=42
Now TR||QU and RS is a transversal.
TRS+QUR=180 (Angles on the same side of a transversal are supplementary)
Or, 42+QUR=180
QUR=18042=138

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