Section 1.1 & Section 1.2 Section 1.1 Answer: Point W does not lie in a plane RST, so the point W is not coplanar with points R, S and T. X N M A sketch of MN and NX is shown.
B M N The figure shows plane M and ray NB intersecting at point A.
Answer: Point C is collinear with point B and I. Answer: Point B is coplanar with points C, G and F. Answer: Points K, L, R and S do not lie on plane PQNM, making them noncoplanar with points P, Q and N. Answer: It is possible for one point to be in two different planes. The point specifically lies on the intersection of the planes.