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# Unit 9: Solids

### Unit 9: Solids Vocabulary

Base of a Cone The flat, circular portion of a cone.
Base of a Pyramid The face that does not intersect the other faces at the vertex, a polygonal region.
Base of a cylinder The two congruent and parallel circular regions that form the ends of the cylinder.
Base of a prism The two faces formed by congruent polygons that lie in parallel planes, all of the other faces being parallelograms.
Cone A three dimensional shape with a circular or elliptical base and one vertex.
Cube A regular polyhedron whose six faces are congruent squares.
Cylinder A three dimensional object with two parallel, congruent, circular bases.
Edge The intersection of a pair of faces in a three dimensional figure.
Face One of the polygons that makes up a polyhedron.
Lateral Faces In a prism, a face that is not a base of the figure and in a pyramid, faces that intersect at the vertex.
Net A two-dimensional figure that has polygons as faces.
Polyhedron A three-dimensional figure that has polygons as faces.
Pyramid A polyhedron with one base and the same number of triangular faces as there are sides of the base.
Prism A polyhedron with two parallel and congruent faces, called bases, and all other faces that are parallelograms.
Surface Area The total area of the two-dimensional surfaces that make up a three dimensional object.
Volume The amount of space occupied by an object;a measure of filling.
Created by: mcrippen