Question

What is the scale factor of the dilation of line segment BA?

A) 1/5
B) 1/4
C) 4
D) 5

Answer 1

we know that

If

the two triangles, ABC and A'B'C are similar

then

`CB/CB' = CA/CA' = BA/B'A'`

`CA/CA'= (4)/(20)`

`CA/CA'= (1)/(5)`

`BA/B'A'= (1)/(5)`

`B'A' = 5BA`

therefore

the answer is the /option D)

`5`