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In triangle PQR, PS is perpendicular to ...

In triangle PQR, PS is perpendicular to QR from point P and meets QR at points S. If PS : QS : RS = 2 : 4 : 1 then which one is true :

A

PQR is an equilateral triangle

B

PQR is perpendicular on P

C

PQR is an isosceles triangle

D

PQ = 3PR

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