Parallel, Intersecting, Perpendicular, and Skew Lines Skew lines are two lines that do not meet, no matter how far they are extended.They are not parallel, which means they do not run next to each other.They are also not in the same plane, meaning they don’t lie in the same flat surface.Skew lines can be imagined as two sticks held next to each other, but not parallel.If you imagine one stick as a road going straight ahead and the other stick as a bridge crossing over the road, they will never meet each other.That’s what makes them skew lines! Test Your Understanding