Unit 6, Lesson 17, Grade 7 icon
Unit 6, Lesson 17

Slicing a Right Rectangular Pyramid with a Plane

EngageNY 45 min(s)

Students describe polygonal regions that result from slicing a right rectangular pyramid by a plane perpendicular to the base and by another plane parallel to the base. Have students build right rectangular pyramids from the provided nets in their groups. Once the pyramids are built, lead a discussion that elicits a student description of what a right rectangular pyramid is. Students may remark on the existence of a rectangular base, that the sides are isosceles triangles, and that the edges of the isosceles triangles all meet at a vertex.

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