Question

Triangle EFG is dilated with a scale factor of to create DE'F'G'. The measure of ÐF' is 36°. What is mÐF?

A
18°

B
72°

C
144°

D
36°

Answer 1

B. 36°

Explanation:

Dilation does not change the angle measures or the direction of the lines. Angle F is the same as corresponding angle F'.