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A rectangle ABCD of dimensions r and 2r is folded along diagonal BD such thatplanes ABD and CBD are perpendicular to each other. Let the position of the vertex Aremains unchanged andC 1 is the new position of C.
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A rectangle ABCD of dimensions r and 2r is folded along diagonal BD such thatplanes ABD and CBD are perpendicular to each other. Let the position of the vertex Aremains unchanged and
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