### Home > MC2 > Chapter 7 > Lesson 7.2.1 > Problem7-71

7-71.

Use the similar shapes below to answer the questions below.

1. What is the scale factor from shape A to shape B?

What is the factor between $12$ and $3$?

Divide by $4$.

2. What is the scale factor from shape B to shape C?

What is the factor between $6$ and $24$?

3. How are these scale factors related?

Do you notice any similar changes from shapes A to B and B to C? Do they have similar factors?

4. What do you know about shape A and shape C?

They are congruent.