Lines that that intersect each other at right angles on a plane are perpendicular lines.
Chat with our AI personalities
Lines which are parallel. All other lines on the same plane eventually intersect.
If two lines are perpendicular, they intersect at a right angle. So yes, they will always cross each other.
doraemon the cartoon jumping
Parallel lines in the Euclidean plane do not intersect but all parallel lines in the projective plane intersect at the point at infinity.
a Cartesian Coordinate plane