Question

Please help me with this ACT Prep problem.

Answer 1

Answer:

Option C

Step-by-step explanation:

ΔABC and ΔDEF are similar triangles.

By the property of similar triangles, corresponding sides of the similar triangle are proportional.

$\frac{AB}{DE}=\frac{BC}{EF}=\frac{AC}{DF}$

$\frac{6}{DE}=\frac{6}{3}=\frac{10}{5}$

$\frac{6}{DE}=\frac{6}{3}$

DE = 3

Perimeter of ΔDEF = Sum of measures of the sides of the triangle

                                = DE + EF + DF

                                = 3 + 3 + 5

                                = 11

Therefore, Option C will be the correct option.