Basic Geometry Definitions

A point that divides a segment into two congruent segments.

• Vertex

• Endpoint

• Angle bisector

• Midpoint

A location in space that is represented by a dot and has no dimensions

• Point

• Line

• Plane

• Angle

Consists of 2 endpoints and all the points in between.

• Ray

• Line

• Line Segment

• Angle

Points that lie in the same plane.

• Colinear

• Intersection

• Parallel Planes

• Coplanear

A ____________ is a straight path made up of an infinite number of points. It has arrows on each end because it continues forever.

A ___________ is part of a line that begins with a point, then extends forever in one direction.

A collection of collinear points that have a distinct beginning and end.

• Point

• Segment

• Line

• Plane

The most basic element of Geometry.

• Point

• Segment

• Line

• Plane

A collection of points that continue in opposite directions with no end.

• Point

• Segment

• Line

• Plane

A flat surface of points that continues infinitely in all four directions.

• Point

• Segment

• Line

• Plane