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[[Line]]s that are parallel do not intersect at any [[point]].
[[Line]]s that are parallel must not intersect at any [[point]] and they must be [[coplanar]].
Parallel lines are important in discussions of Euclidian [[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-Euclidian geometries allow for infinite or no parallel numbers of lines.
Parallel lines are important in discussions of Euclidian [[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-Euclidian geometries allow for infinite or no parallel numbers of lines.