CoplanarPoints
CoplanarPoints[{p1,p2,p3,p4,…,pn}] tests whether the points p1,p2,p3,p4,…,pn are coplanar.
Examples
Test if four points are coplanar:
CoplanarPoints[{{0, 0, 0}, {1, 0, 0}, {0, 1, 0}, {1, 1, 0}}]
(* True *)Non-coplanar points:
CoplanarPoints[{{0, 0, 0}, {1, 0, 0}, {0, 1, 0}, {0, 0, 1}}]
(* False *)Please visit the official Wolfram Language Reference for more details.