Question

triangle abc is similar to triangle def
ab = __ in.
options: 10, 6, 8

Explanation:

Step1: Find similarity ratio

$\text{Ratio} = \frac{AC}{DF} = \frac{10}{5} = 2$

Step2: Calculate length of AB

$AB = DE \times \text{Ratio} = 3 \times 2$

Answer:

6