**Points, lines, and planes | Geometry (practice) | Khan Academy**
https://www.khanacademy.org/math/geometry-home/geometry-lines/points-lines-planes/e/points_lines_and_planes

Geometric definitions. Math ... For example, given the drawing of a plane and points within 3D space, determine whether the points are colinear or coplanar. Practice the relationship between points, lines, and planes. For example, given the drawing of a plane and points within 3D space, determine whether the points are colinear or coplanar.

**DA:** 73 **PA:** 63 **MOZ Rank:** 99