Question

DEF is a dilation image of ABC. What is the scale factor?

Answer 1

Answer:

Option (2)

Step-by-step explanation:

ΔDEF is a dilation image of ΔABC.

Rule for the dilation,

Scale factor = $\frac{\text{Length of one side of the image triangle}}{\text{Length of one side of the original triangle}}$

                    = $\frac{DE}{AB}$

                    = $\frac{4}{8}$

                    = $\frac{1}{2}$

Therefore, scale factor by which ΔABC is dilated is $\frac{1}{2}$.

Option (2) will be the correct option.