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Big Ideas Math Geometry, 2014

BI

Big Ideas Math Geometry, 2014 View details

Chapter Review

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Exercise 19 Page 658

Note that the plane is parallel to the base of the pyramid. What shape does it have?

Square

Practice makes perfect

Let's analyze the cross section formed by the intersection of the plane and the solid.

The solid is a pyramid, whose base is a square. We can see that the plane is parallel to the base of the pyramid, hence the cross section has the same shape as the base. This allows us to conclude that the cross section is also a square.