What is a Plane in 3D? https://www.youtube.com/watch?v=3dNL_aOVuQ4 Definition of plane and its equations If point P(x, y, z) moves according to certain rule, then it may lie in a 3-D region on a surface or on a line or it may simply be a point. Whatever we get, as the region of P after applying the rule, is called locus of P. Let us discuss about the plane or curved surface. … [Read more...] about What is a Plane in 3D?