Perpendicular, Parallel and Skew Lines in Space - Concept

Concept Concept (1)

With the introduction of the 3D coordinate system we find the concepts of skew, perpendicular and parallel lines in space. Skew lines are new, and are lines that are not parallel, yet never intersect. Perpendicular and parallel lines in space are very similar to those in 2D and finding if lines are perpendicular or parallel in space requires an understanding of the equations of lines in 3D.

Sample Sample Problems (2)

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Perpendicular, Parallel and Skew Lines in Space - Problem 1
Problem 1
How to find the equation of a line parallel to and perpendicular to a given line in space.
Perpendicular, Parallel and Skew Lines in Space - Problem 2
Problem 2
How to determine whether two lines in space intersect, and if not, how to determine if they are parallel.