如图,已知
的中线
,
交于
点,过点
作
交
于点
.若
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/2020/7/2/2497267758292992/2497418046636032/STEM/93238b24-45ee-490e-9e8f-c02e8e912679.png?resizew=209)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa18a03671dd947a5ddcef1e770f8ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://img.xkw.com/dksih/QBM/2020/7/2/2497267758292992/2497418046636032/STEM/93238b24-45ee-490e-9e8f-c02e8e912679.png?resizew=209)
A.5 | B.4 | C.3 | D.2 |
更新时间:2020-07-31 19:48:28
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【推荐1】如图所示,在正方形ABCD中,G为CD边中点,连接AG并延长交BC边的延长线于E点,对角线BD交AG于F点.已知FG=2,则线段AE的长度为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/7d1838a9-68de-491e-9205-8425335570fa.png?resizew=210)
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【推荐2】如图,在矩形
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【推荐1】如图,正方形ABCD中,以BC为边向正方形内部作等边△BCE,连接AE并延长交CD于F,连接DE,下列结论:①AE=DE;②∠CEF=45°;③AE=EF;④△DEF∽△ABE,其中正确的结论共有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/25/12374d88-6375-4485-978b-6849be19f8d1.png?resizew=109)
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【推荐2】如图,在
ABCD中,G是BC延长线上的一点,AG与BD交于点E,与DC交于点F,则图中相似三角形共有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/2678f9e5-7602-4126-a23d-db3899081a98.png?resizew=173)
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【推荐1】已知△ABC∽△DEF,相似比为3:1,且△ABC的面积与△DEF的面积和为40,则△ABC的面积为( )
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【推荐2】△ABC中,AB=12,BC=18,CA=24,另一个和它相似的三角形最长的一边是36,则最短的一边是( )
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