Question

The two triangles below are similar. What is the perimeter of triangle XYZ?

Answer 1

24 units

Explanation:

create a proportion:

15/20 = 6/XY

cross-multiply:

15·XY = 120

XY = 8

15/25 = 6/YZ

cross-multiply:

15·YZ = 150

YZ = 10

Perimeter:

6 + 8 + 10 = 24