Skew Lines

In solid geometry, skew lines are two lines that do not intersect and are not parallel. Equivalently, they are lines that are not coplanar. A simple example of a pair of skew lines is the pair of lines through opposite edges of a regular tetrahedron. Lines that are coplanar either intersect or are parallel, so skew lines exist only in three or more dimensions.

Read more about Skew Lines:  Explanation, Configurations of Multiple Skew Lines, Skew Lines and Ruled Surfaces, Distance Between Two Skew Lines, Skew Flats in Higher Dimensions

Famous quotes containing the word lines:

    ... when I awake in the middle of the night, since I knew not where I was, I did not even know at first who I was; I only had in the first simplicity the feeling of existing as it must quiver in an animal.... I spent one second above the centuries of civilization, and the confused glimpse of the gas lamps, then of the shirts with turned-down collars, recomposed, little by little, the original lines of my self.
    Marcel Proust (1871–1922)