如图所示,
是
边
的中点,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d1da196236015f489513c75040a1e0.png)
![](https://img.xkw.com/dksih/QBM/2018/7/8/1984014402134016/1984936817639425/STEM/61f2a112f0614186acfef3705563a2a1.png?resizew=190)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7372fba80fbccfd6141d9873b0c49261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84eca96d76aebf52827bb14b41c22fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d1da196236015f489513c75040a1e0.png)
![](https://img.xkw.com/dksih/QBM/2018/7/8/1984014402134016/1984936817639425/STEM/61f2a112f0614186acfef3705563a2a1.png?resizew=190)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2018-07-09 19:47:12
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相似题推荐
单选题
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适中
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解题方法
【推荐1】已知在平行四边形
中,
点
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则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知△ABC的三个顶点A,B,C及平面内一点P满足
+
+
=
,则点P与△ABC的关系为 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff747a7cd7f807fe3e195ed0f93197f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/499e2869599f85300371eb55c2a606f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d482367dbcaf3c6d06997cb458dff014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b447225c003f775dc8435ab59a3629.png)
A.P在△ABC内部 |
B.P在△ABC外部 |
C.P在AB边所在直线上 |
D.P是AC边的一个三等分点 |
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【推荐1】已知菱形ABCD的边长为4,点M是线段CD的中点,
,则
=( )
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【推荐2】如图,在任意四边形
中,其中
,
,
,
分别是
,
的中点,
,
分别是
,
的中点,求
=( )
![](https://img.xkw.com/dksih/QBM/2021/6/23/2749134422761472/2782500836507648/STEM/60d8618b61e6470ca13fa96b260b7e22.png?resizew=178)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://img.xkw.com/dksih/QBM/2021/6/23/2749134422761472/2782500836507648/STEM/60d8618b61e6470ca13fa96b260b7e22.png?resizew=178)
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【推荐1】在三角形
中,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b4486503d7ef4389c6954d0db48a57.png)
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您最近一年使用:0次
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【推荐2】在平面四边形
中,已知
的面积是
的面积的3倍.若存在正实数
使得
成立,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac55d91a13b7730f469b4d7a490aee8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05743d5fc1671f25464dea7073a31e29.png)
A.10 | B.9 | C.8 | D.7 |
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解题方法
【推荐1】设
为
所在平面内一点,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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您最近一年使用:0次
单选题
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适中
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解题方法
【推荐2】已知
是
内的一点,若
的面积分别记为
,则
.这个定理对应的图形与“奔驰”轿车的
很相似,故形象地称其为“奔驰定理”.如图,已知
是
的垂心,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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