Question

1.1

Q(-4; 2)

R(7:-1)

P (-2;-4)
Figure 1.1: Triangle PQR in a Cartesian plane
Prove that PQR is right-angled.
Please help

Answer 1

Legs = 122.10 "rounded"

Hypotenuse= 122.10 "Exact cannot be rounded"

Distance

PQ = 5.66

PR=9.49

QR= 11.05

squared that all then add the PQ and PR if the sum of that two is equal to hypotenuse it is prove

we squared 11.05, 5.66, 9.49

hope that helps