Definition:Collinear

Definition

Collinear means sharing a common (straight) line.

Collinear Points

Three (or more) points are collinear if and only if there exists a straight line that passes through all the points.

Collinear Planes

A set of planes which share the same (straight) line are collinear.

Also known as

The word collinear can also be presented as co-linear or colinear.

Also see

• Definition:Copunctal
• Definition:Coplanar

• Results about collinearity can be found here.

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): collinear
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): collinear