Geometry Terms

surface area

• the total volume of a three-dimensional figure

• the sum of the areas of all the surfaces (faces) of a three-dimensional figures

• the perimeter of the base of a three-dimensional figure

• the area of the largest face of a three-dimensional figure

composite figure

• a figure that is made up of two or more figures

• a single geometric shape

• a figure with only straight edges

• a figure that cannot be divided into smaller parts

radius

• the distance from the center of a circle to any point on the circle

• the diameter of a circle

• the area of a circle

• the circumference of a circle

pi

• the ratio of the circumference of a circle to its diameter. Approx. 3.14

• a mathematical constant representing the base of natural logarithms, approximately 2.71

• the ratio of the area of a circle to the square of its radius, approximately 3.14

• the distance around a circle, approximately 6.28

volume

• the amount of space an object occupies.

• the number of cubic units needed to fill the space occupied by a solid.

• the total surface area of a solid.

• the weight of a solid object.

center

• the point from which all points on a circle are the same distance

• the outer edge of a circle

• a line segment that connects two points on a circle

• the area enclosed by a circle

diameter

• the distance across a circle through its center

• the length of the circumference of a circle

• the area of a circle

• the distance from the center to the edge of a circle

circle

• the set of all points on a plane that are the same distance from a point called the center

• a polygon with three sides

• a closed figure with four equal sides

• a straight line connecting two points

circumference

• the distance around a circle

• the area of a circle

• the diameter of a circle

• the radius of a circle

prism

• a polyhedron with two parallel congruent faces called bases.

• a three-dimensional shape with all sides equal.

• a shape that has only one base and is open at the top.

• a solid figure with a curved surface and no edges.