Question

PQR is a isosceles right triangle right Angled at Q prove the PR 2 =2 PQ2​

Answer 1

Answer:

As ΔPQR is right angled at R, then,

PQ square =QR square  +PR square  

Since the triangle is an isosceles triangle, then, QR=PR, therefore,

PQ square =PR square  +PR square  

PQ   square  =2PR square

Hence proved.

Answer 2

Answer:

in isosceles triangle two sides are equal

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