Geometry Terms

Front

Collinear

Back

Points that lie on the same straight line.

Front

Plane

Back

A flat, two-dimensional surface that extends infinitely.

Front

Intersection

Back

The point or set of points where lines, planes, or segments meet.

Front

Coplanar

Back

Points or lines that lie in the same plane.

Front

Ray

Back

A part of a line that starts at an endpoint and extends infinitely in one direction.

Front

Opposite Rays

Back

Two rays that share an endpoint and form a straight line.

Front

Segment

Back

A part of a line with two endpoints.

Front

Symbol for Segment

Back

A line segment AB is written as 'AB' (with a bar above).

Front

Line

Back

A straight one-dimensional figure extending infinitely in both directions.

Front

Symbol for Line

Back

A line AB is written as 'AB' (with arrows on both ends).