题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035240-55118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035240-95255.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035240-29561.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035240-65248.jpg)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035241-79804.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035240-55118.png)
一点,若
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035240-95255.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035240-29561.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035240-55118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035241-79804.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035232-43028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035233-13005.png)
①若
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035233-16907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035233-19440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035233-45457.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035234-17717.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035234-38800.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035233-45457.png)
③若
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035234-38432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035235-90684.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035235-45851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035235-90261.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035235-54327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035235-45851.png)
其中正确命题的序号是 。(把正确命题的序号都填上)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035223-70270.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035213-53445.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035203-31216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035203-47778.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035203-66429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035203-73324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035204-54513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035204-65120.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035204-29059.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035204-97073.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035205-79226.png)
求证:(Ⅰ)直线
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035205-59307.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035205-50572.png)
(Ⅱ)平面
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035205-15010.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035206-17277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035206-10514.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035151-45314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035151-46217.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035151-59765.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035151-65354.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035151-33595.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035152-20230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035152-82269.png)
(Ⅰ)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035152-95145.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035153-48003.png)
(Ⅱ)求二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035153-38328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106035153-85506.jpg)
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