If S is a point on side pq of a triangle pqr such that ps = qs = rs th

1.	If S is a point on side pq of a triangle pqr such that ps = qs = rs then
Answer» PQR is right angled triangle As if pq=qs=rs then L sqr = L srq = xAnd similarly L spr = L srp = y(isosceles triangle property)And by exterior angle property L psr= 2x and Lrsq = 2yBy linear pair 2x + 2y = 180°:. x+y = 90 hence, Lprq=x+y= 90°

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