Question

What is the scale factor from ADEF to AABC?

10
6
20
12
А
7
14

Answer 1

The scale factor is 1/2

Explanation:

Given

`\triangle DE F` and
`\triangle ABC`

Required

The scale factor from
`\triangle DE F` to
`\triangle ABC`

Take a corresponding side in both triangles.

We have:

`DE= 20`
`AB = 10`

The scale factor from
`\triangle DE F` to
`\triangle ABC` is:

`k =(AB)/(DE)`

`k =(10)/(20)`

`k =(1)/(2)`