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 Related Terms
 Solid:  A figure that has length, width, and thickness (i.e., a figure that is 3-dimensional).
Box: A rectangular prism that can be empty or filled.
Prism: A polyhedron with two parallel and congruent faces, called bases, and all other faces that are parallelograms.
Pyramid: A polyhedron with one base and the same number of triangular faces as there are sides of the base.
Cone: A three dimensional figure with a circular or elliptical base and one vertex.
Cylinder: A three dimensional object with two parallel, congruent, circular bases.
Sphere: The set of all points in space that are equidistant from a fixed point, called the center.
Three-Dimensional Figure: Figures that have length, width, and thickness.
Platonic Solids: The five regular polyhedrons, meaning that they are polyhedrons that have faces which are congruent regular polygons and have the same number of edges meeting at each vertex.