20 terms

bases

The bases of a prism are any two parallel congruent faces.

center

The given point from which all points on the circle are the same distance.

circumference

The distance around a circle.

composite figure

A figure that is made up of two or more shapes.

cross section

The intersection of a solid and a plane.

diameter

The distance across a circle at its center.

edge

Where two planes intersect in a line.

face

A flat surface, the side or base of a prism.

lateral area

The sum of the areas of the lateral faces of a solid.

lateral faces

All the surfaces of a prism, cylinder, pyramid or cone except the base or bases.

pi

The ratio of the circumference of a circle and its diameter.

plane

A two dimensional flat surface that extends in all directions and contains at least 3 noncollinear points.

polyhedron

A solid with flat surfaces that are polygons.

prism

A polyhedron that has two parallel, congruent bases in the shape of polygons.

radius

The distance from the center of the circle to any point on the circle.

slant height

The length of the altitude of a lateral face of a regular pyramid or cone.

solids

Three-dimensional figures.

surface area

The sum of the areas of all the surfaces of a solid.

vertex

Where three or more planes intersect in a point.

volume

The measure of space occupied by a solid region.