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.

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Subjects: Mathematics