# Line

Line is one of the basic undefined terms in Euclidian geometry, but one intuitive definition is as follows: A straight set of points that continue on to infinity in both directions. Although a line is of infinite length, it has thickness and width of zero.

**See also: **Dense Line, Distance Between Two Points, Foot of Line, Midpoint, One Dimensional, Plane, Point, Straight Line, Transversal.

**Subjects: ** Mathematics