Geometry Basics

Front

A location with no size or shape.

Back

Point

Front

Made up of points with no thickness or width.

Back

Line

Front

A measurable part of a line consisting of two endpoints.

Back

Line Segment

Front

A line that extends indefinitely in one direction.

Back

Ray

Front

A flat surface made up of points and extends indefinitely in all directions.

Back

Plane

Front

Points that lie on the same line.

Back

Collinear

Front

Points that don't lie on the same line.

Back

Non-Collinear

Front

Points that lie on the same plane.

Back

Coplanar

Front

Points that don't lie on the same plane.

Back

Non-Coplanar

Front

If two segments have the same length, then they are congruent.

Back

Congruent Segments