Q. 21

Which of the following is a true statement?
A. The floor and a wall of a room are parallel planes.

B. The ceiling and a wall of a room are parallel planes.

C. The floor and the ceiling of a room are parallel planes.

D. Two adjacent walls of a room are the parallel planes.

Answer :

The floor and the ceiling of a room are parallel planes.


The floor and the ceiling of the room are parallel planes.

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