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 Related Terms
 Polyhedron:  A 3-dimensional figure that has polygons as faces.
Regular Polyhedron: A 3-dimensional solid that has congruent regular polygons as faces and has congruent angles between all faces.
Polygon: A closed figure formed by three or more line segments.
Three-Dimensional Figure: Figures that have length, width, and thickness.
Adjacent Faces: Two faces of a polyhedron that share a common edge.
Edge: The intersection of a pair of faces in a three-dimensional figure.
Face: One of the polygons that makes up a polyhedron.
Vertex of a 3D Object: The point(s) where the edges of a 3D object intersect.