Question

points a, e & d are_________.
a) collinear
b) coplanar
c) skew
d) parallel

Explanation:

Step1: Recall definitions

Collinear points lie on the same line. Coplanar points lie on the same plane. Skew lines are non - parallel and non - intersecting in 3 - D space. Parallel is usually for lines or planes, not for points.

Step2: Analyze the points in the cube

Points A, E and D do not lie on the same line. But they all lie on the same plane (for example, the plane that can be formed by extending the face containing A and D and considering the position of E).

Answer:

B. Coplanar