What is a skew line?

Skew lines are lines that do not exist in the same plane; therefore, they can never intersect. Skew lines do not define planes, and skew lines are not parallel.

Skew lines only exist in three or more dimensions. Skew lines are groups of two or more lines that never meet, are not perpendicular and are not parallel. There are an infinite number of skew lines when dealing in three dimensions or more. Skew lines do not exist in two-dimensional geometry. There is a unique perpendicular line to each two skew lines. This is a line that intersects each of the skew lines and forms a 90-degree angle when intersecting.