Question

consider the diagram. lines a and d are non - coplanar. parallel. perpendicular. skew.

Explanation:

Step1: Recall line - plane relationships

Lines in 3 - D space can be coplanar or non - coplanar. Coplanar lines are either parallel, intersecting or perpendicular. Non - coplanar lines are skew.

Step2: Analyze lines a and d

Line a lies in plane N and line d lies in plane M. Planes N and M intersect. Lines a and d do not intersect and are not parallel. Since they are not in the same plane, they are non - coplanar.

Answer:

non - coplanar