解答题-证明题 适中0.65 引用1 组卷165
如图,三棱柱ABC﹣A1B1C1的侧面AA1B1B是菱形,侧面AA1C1C是矩形,平面AA1C1C⊥平面AA1B1B,∠BAA1
,AA1=2AC=2,O为AA1的中点.
![](https://img.xkw.com/dksih/QBM/2020/2/10/2395976846057472/2398044481036288/STEM/e4c043b77d8c4a38b680a293cd276fe0.png?resizew=265)
(1)求证:OC⊥BC1;
(2)求点C1到平面ABC的距离.
![](https://img.xkw.com/dksih/QBM/2020/2/10/2395976846057472/2398044481036288/STEM/e4c043b77d8c4a38b680a293cd276fe0.png?resizew=265)
(1)求证:OC⊥BC1;
(2)求点C1到平面ABC的距离.
18-19高三·广东广州·阶段练习
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