3D Shapes Prisms & Pyramids

Chelsea R.

Prisms

A Prism is a polyhedron that has two congruent top and bottom faces. To be considered a prism the 3D shape has to have two congruent sides and rectangular side faces.

Pyramid

A Pyramid is also a polyhedron, its base is a a polygon but the lateral sides are triangles. To be a pyramid the 3D shape has to have 1 base and triangular side bases that meet at one vertex.
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WORDS TO KNOW

Face: a flat surface on prisms and pyramids, faces are polygons.

Edge: A fine line formed by two faces.

Vertex: A point where two or more edges meet.

Polygon: a plane figure with at least three straight sides and angles, and typically five or more.