如图,在四棱柱ABCD-A1B1C1D1中,已 知平面AA1C1C丄平面ABCD,且AB=BC=CA=, AD =" CD" =1
(I)求证:BD丄AA1;
(II)若四边形ACC1A1是菱形,且=600,求四棱柱 ABCD-A1B1C1D1的体积.
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如图,在四棱柱ABCD-A1B1C1D1中,已 知平面AA1C1C丄平面ABCD,且AB=BC=CA=, AD =" CD" =1
(I)求证:BD丄AA1;
(II)若四边形ACC1A1是菱形,且=600,求四棱柱 ABCD-A1B1C1D1的体积.
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