### Home > CCG > Chapter 4 > Lesson 4.1.2 > Problem 4-18

4-18.

The triangles shown below are similar. Homework Help ✎

What is the ratio of side length

to side length?Use a ratio to compare the perimeters of

and . How is the perimeter ratio related to the side length ratio? If you have not already done so, find the length of

In part (a), you found that the zoom factor between the two triangles is

.

Now use this information to find the perimeters of each triangle, then find the ratio between them.