Question

1. In A PQR, X is the midpoint of QR. XYand XZ are altitudes from X on PQ and PR respectively. If XY = XZ, then prove that PQR is an isosceles triangle.​

Answer 1

Step-by-step explanation:

Given:

ar. (∆XYZ). = 10

AS X,Y and Z are midpoint of PQ .QR and PR

we know that

Ar( ∆XYZ) = 1/4Ar ( PQR)

therefore Ar(∆PQR) = 4(10) = 10

Ar. (∆PQR) = 40