In fig PQRS is a parallelogram whose diagonal interest at 0° find the value of x
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Answer:
The opposite sides of a parallelogram are
parallel.
∴ PQ∥SR and QS is transversal.
∴ ∠SQR =∠PSQ
since,the interior alternate angles are equal.
∴ ∠PSR =∠PSQ + ∠QSR =∠SQR +∠QSR =30
∘
+25
∘
=55
∘
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