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Question

PQRS is a quadrilateral in which diagonals PR and QS intersect in O.

i16

Find the correct relation between perimeter and diagonals of the quadrilateral.


A

PQ + QR + RS + SP > (PR + QS)

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B

PQ + QR + RS + SP < (PR + QS)

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C

PQ + QR + RS + SP < 2 (PR + QS)

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D

PQ + QR + RS + SP = (PR + QS)

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Solution

The correct option is C

PQ + QR + RS + SP < 2 (PR + QS)


In OPQ, we have

OQ + OP > PQ ...(i)

In OQR, we have

OQ + OR > QR ...(ii)

In ORS, we have

OR + OS > RS ....(iii)

In OSP, we have

OS + OP > SP ....(iv)

Adding (i), (ii), (iii) and (iv), we get

PQ + QR + RS + SP < 2 (PR + QS)


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