Parallel
From Conservapedia
(Redirected from Parallel lines)
Lines that are parallel must not intersect at any point and they must be coplanar.
Parallel lines are important in discussions of Euclidean geometry. A postulate of Euclidean geometry is that given a line and a point, there is exactly one line through the point parallel to the original line. Non-Euclidean geometries allow for an infinite number of or no parallel lines.