Coplanar lines that do not intersect are parallel. Non-coplanar lines that do not intersect are called skew lines.
Two coplanar lines that never intersect are called called parallel lines.
When two lines intersect to form a right angle they are called perpendicular.
A
The lines that intersect to Form A right triangle are called Perpendicular Lines; the resulting meeting point of these two lines is called the vertex of the angle.
Coplanar lines that do not intersect are called parallel lines.
Coplanar lines that do not intersect are parallel. Non-coplanar lines that do not intersect are called skew lines.
2 lines that do not and will not intersect are called parallel lines.
Two coplanar lines that never intersect are called called parallel lines.
Two lines cross or intersect at a point.
Lines that intersect but do not form a right are just called intersecting lines. Perpendicular lines DO form a right angle when they intersect.
They are called perpendicular lines that intersect each other at right angles.
"skew" lines
If the two lines lie in the same plane, and they do not intersect, then they are parallel. If they are not in the same plane, and do not intersect, then they are called skew lines.
If they didn't intersect, then they couldn't be called intersecting lines.
When two lines intersect to form a right angle they are called perpendicular.
Perpendicular lines intersect to form right angles