Question

Please help and answer

Answer 1

4=side length of A'B'

4 is length of B'B.

Explanation:

the dilation is 1/3. 9 is the bottom side length of the bigger triangle and 3 is the corresponding one of the smaller triangle. 9/3=3. 12/3=4

4=side length of A'B'

2 times 3 equals 6 (BC')

6-2=4

4 is length of B'B.