
什么是正三棱柱

如图,在直三棱柱abc_a1b1c1中,ab=ac=1,aa1=√2,ab⊥ac.求异面直线bc1

(2012江苏一模)如图,在直三棱柱abc-a1b1c1中,ab=ac=5,bb1=bc=6,d,e
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如图在直三棱柱abca1b1c1中aa1bcab2abbc求二面角b1a1c

解答: 解:由三视图可知:该几何体为一个直三棱柱
什么是正三棱柱
如图,在直三棱柱abc_a1b1c1中,ab=ac=1,aa1=√2,ab⊥ac.求异面直线bc1
(2012江苏一模)如图,在直三棱柱abc-a1b1c1中,ab=ac=5,bb1=bc=6,d,e
如图在直三棱柱abca1b1c1中aa1bcab2abbc求二面角b1a1c
解答: 解:由三视图可知:该几何体为一个直三棱柱