题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033558-77314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033558-99510.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033558-60055.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033558-44449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033559-11375.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033559-97016.png)
解析
试题分析:由于已知等边
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033558-77314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033558-99510.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033559-96379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033559-44618.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033559-11034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033559-44618.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033558-60055.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033558-44449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033600-20170.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033559-11375.png)
试题解析:由已知得:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033559-96379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033559-44618.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033559-11034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033558-60055.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033558-44449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033600-34796.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033600-45911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033600-12828.png)
从而
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033601-29033.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033601-62781.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033601-90003.png)
核心考点
试题【若等边的边长为,平面内一点满足,求.】;主要考察你对平面向量数量积的意义等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033551-14271.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033551-67550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033551-29126.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033552-74474.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033552-96781.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033552-28125.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033551-14271.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033551-67550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033551-14271.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033551-67550.png)
A.![]() | B.![]() | C. | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033544-32285.png)
A.![]() ![]() ![]() ![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() ![]() |
D.![]() ![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033535-47737.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033535-61395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033535-26704.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033536-79730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033536-98845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033536-79730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033529-56496.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033529-43700.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033520-40530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033520-18258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033521-61372.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033521-51324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033520-18258.png)
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