Q. 405.0( 3 Votes )

In Fig. 5.31, PQ||ST. Then, the value of x + y is


A. 125°

B. 135°

C. 145°

D. 120°

Answer :

y + PQR = 1800 (Forms a linear pair)


y + 1300 = 1800


y = 500


QOS = TSO (Co-interior angle)


x = 850


x + y = 1350

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