Question

Annie walks 15 feet away from her house and places a mirror on the ground. She backs 4 feet away from the mirror so that she can see the tip of the roof. Annie's eyes are 5 feet above the ground. The angles between the top of the house, the mirror, and the ground and between Annie's eyes, the mirror, and the ground are congruent as shown in the image:

Image depicts a mirror on the ground between a person and a house. The mirror is 4 feet away from the person and 15 feet away from the house.

Part 1: Prove the triangles are similar