Answer:
A) CD
B) AB
C) Plane ABCD is parallel to EFGH.
Plane BDFH is parallel to ACGE.
Plane ABFE is parallel to CDHG.
Explanation:
We are given the following in the question:
A cuboid ABCDEFGH is given.
A) line segment that is parallel to AB
A line segment that is parallel to AB is CD.
B) line segment that is skew to AB
Skew lines are the line that never lie in the same plane and never intersect each other.
Thus line segment FH is skew to line segment AB.
C) pair of parallel planes.
Plane ABCD is parallel to EFGH.
Plane BDFH is parallel to ACGE.
Plane ABFE is parallel to CDHG.