如图,在△ABC中,点D,E分别是AC和BC的中点,连接AE,BD交于点F,则下列结论中正确的是( )
![](https://img.xkw.com/dksih/QBM/2020/1/13/2376204663816192/2376436814102528/STEM/6b7840c965884e75a175b23a3dc0514e.png?resizew=94)
![](https://img.xkw.com/dksih/QBM/2020/1/13/2376204663816192/2376436814102528/STEM/6b7840c965884e75a175b23a3dc0514e.png?resizew=94)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
更新时间:2020-01-13 22:55:59
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【知识点】 相似三角形的判定与性质综合
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【推荐1】如图,AD是直角三角形ABC斜边上的中线,AE⊥AD交CB延长线于E,则图中一定相似的三角形是( )
![](https://img.xkw.com/dksih/QBM/2019/1/17/2120855140089856/2123539030974465/STEM/8defbc95592945afbc879e878a3dabef.png?resizew=169)
![](https://img.xkw.com/dksih/QBM/2019/1/17/2120855140089856/2123539030974465/STEM/8defbc95592945afbc879e878a3dabef.png?resizew=169)
A.△AED与△ACB | B.△AEB与△ACD | C.△BAE与△ACE ![]() | D.△AEC与△DAC |
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【推荐2】如图,点P是△ABC的重心,过点P作DE
AC交BC,AB于D,E,EF
BC交AC于点F,若AC=8,BC=11,则四边形CDEF的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
A.9 | B.18 | C.19 | D.20 |
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