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A prism is a polyhedron that has two parallel,
                                                                  congruent faces called bases. The other faces are
                                                                  parallelograms.

                                                                  This rectangular prism has six faces, twelve edges,
                                                                  and eight vertices.

                                  Prism




                                                                  A cube is a prism whose faces are squares.

                                                                  This cube has six faces, twelve edges, and eight
                                                                  vertices.

                                  Cube



                                                                  A pyramid is a polyhedron whose base is a
                                                                  polygon and whose faces are triangles with a
                                                                  common vertex.

                                                                  This triangular pyramid has four faces, six edges,
                                                                  and four vertices.

                                                                  This square pyramid has five faces, eight edges,
                                                                  and five vertices.

                                 Pyramid


        Other 3-D Figures


        These are solids that are not formed by polygons.









                                       A cylinder is a solid whose bases are circles.




                     Cylinder
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