Basic Geometry Terms and Definitions

A measurable part of a line that consists of two points, called endpoints, and all of the points between them

• Line segment

• Line

The point on a line segment halfway between the endpoints of the segment

A location with no size, only position

A flat surface made up of points that has no depth and extends indefinitely in all directions

A statement that is accepted as true without proof

• Postulate

• Theorem

• Equidistant

The study of geometric figures without the use of coordinates

• Synthetic geometry

• Analytic geometry

A statement that can be proven true using undefined terms, definitions, and postulates

Made up of points, has no thickness or width, and extends indefinitely in both directions

A set of points common to two or more geometric figures

A point is _______ from other points if it is the same distance from them