Parallel lines are lines in a plane that never meet; they are always the same distance apart and have the same slope. A true statement about parallel lines is that they never intersect, regardless of how far they are extended in either direction.
This means that no matter what, there is always a consistent distance between them, and they will not cross each other. This characteristic is used in various fields, such as geometry, engineering, and even art, to create structures and designs that require a specific alignment.