Question

Find the perimeter of the given triangle.

▲ABC if ▲ABC~▲PQR perimeter of ▲PQR=36 AC=12 PR=6

a. 72
b. 18
c. 108
d. 24

Answer 1

Side PR corresponds to side AC.

PR = 6; AC = 12

The scale factor is 2.

Since the perimeter of triangle PQR is 36, then the perimeter of triangle ABC must be 72.

Answer: a. 72