题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111757-40518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111757-96274.png)
A.![]() |
B.3 |
C.6 |
D.9 |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111757-96274.png)
此时|OP|=|OM|-2=
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111758-16079.png)
∴|OP|2=9.即
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111757-96274.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111749-94851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111749-59839.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111750-34256.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111750-46965.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111733-84036.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111733-92521.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111733-52871.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111733-52871.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111733-22063.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111733-13574.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111733-99363.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111733-91805.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111733-55908.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111734-57111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111734-49653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111734-80230.png)
(1)设
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111734-49653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111734-14452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111734-35659.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111734-36934.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111734-41668.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111735-53414.png)
(2)在线段
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111735-34564.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111735-65478.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111735-67568.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111735-24871.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111735-85253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111735-53547.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111708-63622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111708-77896.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111709-95389.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111709-93508.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111709-95389.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111709-93508.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111709-56491.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111709-50072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111710-72444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111710-17731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111710-73494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111710-17731.png)
(1)求二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111710-47401.png)
(2)求点
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111711-98198.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111711-83210.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111711-27391.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111649-14006.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111649-33462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111650-14405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111650-41923.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111650-24156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111650-66942.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111650-60425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111650-97613.png)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111650-94002.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111651-18360.png)
(3)在(2)的条件下,求异面直线
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111651-76267.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111651-72090.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111631-83979.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111631-19482.png)
(1)若PM=
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111631-19482.png)
(2)若二面角M-BD-A的大小为
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111631-54326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105111632-99243.png)
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