解题方法
1 . 已知
是
的外心,
,若
,且
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87b3360ba1c83380f6d83e3de46e02a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be302e81c49aac27488cbd4c41d2e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76b6d65f1802327c31a3fce95124484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
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2 . 若
三点共线,则实数x的值等于_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7d8a4d28ff10a8b29349207147b761.png)
您最近一年使用:0次
2020-08-09更新
|
314次组卷
|
3卷引用:湖北省武汉市黄陂区第二中学2020-2021学年高三上学期月考数学试题
10-11高三上·浙江金华·期中
解题方法
3 . 如图所示,
点在
内部,
分别是
边的中点,且有
,则
的面积与
的面积的比为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e675a92cad72c65aa4071b9d9e226090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee7d9f95385876b8ea36f53bd0b1d51d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80651f797ab9dccfd7163c605b091ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbf9680f74a9ac5d934304654ce2771.png)
![](https://img.xkw.com/dksih/QBM/2013/12/9/1571428584693760/1571428589846528/STEM/fbb7437485ea402883db9fb81a87dcc3.png?resizew=147)
您最近一年使用:0次