Skew lines
LINES IN 3D THAT DO NOT INTERSECT AND NEITHER DO THEY POINT THE SAME DIRECTION
Skew line; Skew straight lines; Skew flats; Distance between two skew lines; Nearest distance between skew lines
In three-dimensional geometry, skew lines are two lines that do not intersect and are not parallel. A simple example of a pair of skew lines is the pair of lines through opposite edges of a regular tetrahedron.