Basic Geometry Line Ray Point

A portion of a line that starts at a point (the endpoint) and continues forever in one direction.

• Point

• Parallel

• Ray

• Line

Points that lie on the same line

• Space

• Collinear Points

• Bisector

• Coplanar Points

Lines that are not coplanar and do not intersect.

• Collinear

• Skew Lines

• Non-Collinear

• Ray

Points or lines all in one plane.

• Ray

• Collinear

• Point

• Coplanar

A portion of a line consisting of two points (endpoints) and all points between them.

• Line

• Point

• Line Segment

• Collinear Points

Two segments that have the same length.

• Line Segment

• Parallel

• Coplanar

• Congruent Segments

An undefined term in Geometry. A flat surface. It has no thickness and it extends forever in all directions.

• Plane

• Line

• Point

• Ray

Lines in the same plane that do not intersect.

• Bisector

• Collinear

• Coplanar

• Parallel Lines

Three or more points not all of which lie on the same line.

• Non-Collinear

• Collinear

• Non-Coplanar

• Ray

Points or lines that are not in the same plane.

• Non-Coplanar

• Coplanar

• Collinear

• Parallel