Question

In an isosceles ∆PQR, PR=QR and PQ²=2PR², then ∠R=​

Answer 1

Step-by-step explanation:

ANSWER

As ΔPQR is right angled at R, then,

PQ

2

=QR

2

+PR

2

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

PQ

2

=PR

2

+PR

2

PQ

2

=2PR

2

Hence proved.

hope it will help you

please follow me yarr