Two lines in space which are neither parallel nor intersecting are called
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → skew lines
In space, two lines can be parallel, can intersect, or can be neither. Lines that are neither parallel nor intersecting are called skew lines. They do not lie in one plane.
Why the other options are incorrect
Option (1) coplanar lines — Incorrect. Two lines in one plane are either parallel or intersecting, so lines that are neither cannot be coplanar.
Option (2) concurrent lines — Incorrect. Concurrent lines pass through a common point, so they intersect.
Option (3) perpendicular lines — Incorrect. Perpendicular describes only the angle between two lines, and perpendicular lines can also intersect.