They are called either obliqe lines or something else
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parralel lines
Perpendicular lines intersect at one point only.
Skew lines
This is true. If three straight lines are drawn, they can only intersect at two points. That is, each line will only intersect with another once.
two lines intersect at a single point in a 2D space assuming they are not parallel. in 3D space they can intersect again at a single point, or an infinite amount of points.