Question

please solve this question.

Answer 1

here pqrs is a quadrilateral whose diagonals intersect at right angles

so,

here. (pq)2+(qr)2=(pr)2..................(1)

(PS)2+(Sr)2=(pr)2..................(2)

from 1st and 2nd we get

(pq)2+(Sr)2=(ps)2+(qr)2

(pq)2+(qr)2=