When you are asked to find out if two lines are perpendicular, parallel, or skewed lines, how can you tell if it is skewed? I know you can use dot product to show if they are perpendicular, and cross product to show if they are parallel, but how do you know if they are skewed?

Question

anonymous · Answer

They are not parallel or perpendiucular...

zarkon · Answer

Two lines are skew if they do not intersect and they are not parallel

anonymous · Answer

Actually, that's better, I was thinking only in 2D