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Question

PQRS is a parallelogram whose diagonals intersect at M.if PMS=54, QSR=25 and SQR=30 ;find : (i) RPS (ii) PRS (iii) PSR.

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Solution

Give : || gm PQRS in which diagonals PR & QS intersect at M. PMS=54 ; QSR=25 and SQR=30

To find : (i) RPS (ii) PRS (iii) PSRProof : QR || PS PSQ=SQR (Alternate s)But SQR=30 (Given) PSQ=30In ΔSMP,PMS+PSM+MPS=180or 54+34+RPS=180RPS=18084=96Now PRS+RSQ=PMS PRS+25=54 PRS=5425=29PSR = PSQ+RSQ=30+25=55Hence (i) RPS=96 (ii) PRS=29 (iii) PSR=55


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