Geometric Solids All bounded three-dimensional geometric figures. Examples: Sphere, Cylinders, Cubes, Cones, Pyramids, and Prisms

The intersection of two or more faces of a three-dimensional figure. Edge The intersection of two or more faces of a three-dimensional figure.

One of the polygons that makes up the polyhedron. Face One of the polygons that makes up the polyhedron.

The point where three edges of a polyhedron meet. Vertex The point where three edges of a polyhedron meet.

Net A two-dimensional representation of a three-dimensional geometric figure.

A three-dimensional figure that has polygons as faces. Polyhedron A three-dimensional figure that has polygons as faces.

Regular Polyhedron A three-dimensional solid that has congruent regular polygons as faces and has congruent angles between all faces.

Having the same size, shape, and measure. Congruent Having the same size, shape, and measure.

A regular polyhedron whose six faces are congruent squares. Cube A regular polyhedron whose six faces are congruent squares.

Unit Cube A cube that is one unit in length, one unit in width, and one unit in height.

Surface Area The total area of the two-dimensional surfaces (faces and bases) that make up a three-dimensional object.

Prism A polyhedron with two parallel and congruent faces and all other faces parallelograms.

Pyramid A polyhedron with one base and the same number of triangular faces as there are sides of the base.

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