Question

teresa wants to find the area of a wall in her attic. the wall is shaped like the polygons at the right. show two different ways teresa could decompose the wall into triangles, rectangles, or both. lesson 2 find the area of triangles and other polygons 35

Explanation:

Step1: First decomposition

Decompose the wall into a large rectangle and a small triangle. The large rectangle takes up most of the horizontal - length part of the wall, and the small triangle is on the slanted part.

Step2: Second decomposition

Decompose the wall into two rectangles and a triangle. One rectangle is on the left - hand side, another rectangle is in the middle horizontal part, and the triangle is on the slanted part.

Answer:

First way: One large rectangle and one small triangle. Second way: Two rectangles and one triangle.