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Question

PR is diagonal of a parallelogram PQRS. Show that Δ PQR Δ RSP.
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Solution

Given that PQRS is a parallelogram.

Hence, PQRS and PSQR

We know that, alternate interior angles formed by a line intersecting two parallel lines, are equal.

SRP=RPQ (Alternate interior angles)

PR=PR (Common)

SPR=PRQ (Alternate interior angles)

According to ASA congruency Criterion

PQRRSP[Hence proved]

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