如图,在△ABC中,分别以点A和点B为圆心,以相同的长(大于
AB)为半径作弧,两弧相交于点M和点M,作直线MN交AB于点D,交AC于点E,连接CD.若AC=6,AB=8,BC=4,则△BEC的周长( )
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878910074634240/2880343228252160/STEM/249a90c4-ea8f-4c4f-8c0c-a3be21199f2d.png?resizew=210)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878910074634240/2880343228252160/STEM/249a90c4-ea8f-4c4f-8c0c-a3be21199f2d.png?resizew=210)
A.10 | B.12 | C.8 | D.14 |
更新时间:2021-12-25 21:36:12
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【知识点】 线段垂直平分线的性质解读
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【推荐1】如图,在
中,
、
的垂直平分线分别交
于点
、
,若
,
,则
的周长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/b75b6228-a739-42b8-b758-9c39e707c6e5.png?resizew=237)
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A.4 | B.5 | C.9 | D.13 |
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【推荐2】若三角形一边中垂线过另一边中点,则该三角形必为( )
A.钝角三角形 | B.锐角三角形 | C.直角三角形 | D.等腰三角形 |
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