Work Step by Step
Z lies on the plane that is colored yellow, while the other three are lie on the plane that is blue. Thus the four points are noncoplanar because they do not all lie on the same plane.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.