Classify 3-Dimensional Figures

A polyhedron is a three-dimensional object with flat surfaces, called faces that are polygons

When two faces of a three-dimensional figure share a side, they form an edge

A point at which three or more edges meet is a vertex (plural: vertices)

A polyhedron is a three-dimensional object with flat surfaces, called faces. Each face is a polygon

A prism is a polyhedron with two congruent, parallel bases, and other faces that are all parallelograms

A prism is named using the shape of its base. For example, a prism with triangular bases is called a triangular prism

A cylinder also has two congruent, parallel bases, but bases of a cylinder are circular. A cylinder is not a polyhedron because not every surface is a polygon

A polyhedron is a three-dimensional object with flat surfaces, called faces. Each face is a polygon

A pyramid has one polygon-shaped base and three or more triangular faces that share a common vertex

A pyramid is named using the shape of its base. For example, a pyramid with a triangular base is called a triangular pyramid

A cone has a circular base and a curved surface that comes to a point. A cone is not a polyhedron because not every base is a polygon

A sphere does not have edges, vertices and faces

A net is the pattern made when the surface of a three-dimensional figure is laid out flat showing each face of the figure

A net is folded to make a three-dimensional figure

A figure can be unfolded in more than one way