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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 parallel planes. |
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Answer» 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 parallel planes. |
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