Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
6. Cross Sections of Three-Dimensional Figures
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Exercise 6 Page 441

The plane is parallel to the base of the pyramid.

Rectangle

Practice makes perfect
Let's take a look at the given diagram.

The diagram shows the intersection of a plane and a rectangular pyramid. We want to describe this intersection. The plane is parallel to the base of the pyramid. As a result, the intersection is similar to the pyramid's base — the intersection is a rectangle.