Use the similar shapes below to answer the questions below.

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

   Hint (a):

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

   Answer (a):

   Divide by $4$.

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

   Hint (b):

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

3. How are these scale factors related?

   Hint (c):

   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?

   Answer (d):

   They are congruent.