10 terms

Perimeter

The distance around a figure.

Area

The amount of space inside a 2-dimensional figure. The number of square units inside a figure.

Volume

The amount of space inside a 3-dimensional figure. The number of cubic units inside an object.

Face

The flat surfaces that form the outside of a 3-dimensional figure.

Edge

The line segments that are formed by the intersection of two faces.

Prism

A 3-dimensional figure with two congruent and parallel faces called the bases. All faces are polygons.

Cylinder

A 3-dimensional figure with two congruent, parallel, circular bases.

Pyramid

A 3-dimensional figure with common vertex and a polygon as a base; all other faces are triangles.

Cone

A 3-dimensional figure with a common vertex and a circular base.

Sphere

A 3-dimensional figure in which all points are the same distance from the center.