Question
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The three planes determine a rectangular parallelopiped which has ________ of rectangular faces.
The three planes determine a rectangular parallelopiped which has ________ of rectangular faces.
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Answer
The three planes determine a rectangular parallelopiped which has three planes of rectangular faces. Solution: As shown in the figure rectangular parallelepiped is determined by three planes ABB' A', AA' D'D, A'B'C'D'. In this parallelepiped we have three pairs of rectangular faces, viz., (ABB'A', DCC'D'), (ABCD, A'B'C'D'), (ADD'A', BCC'B')
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