如图,在梯形ABCD中,AD∥BC,BC=2AD,点E是CD的中点,AC与BE交于点F,那么△ABF和△CEF的面积比是______ .
![](https://img.xkw.com/dksih/QBM/2018/6/6/1961484007317504/1967355315134464/STEM/8914a56d53cc42a082442a36af583d3f.png?resizew=168)
更新时间:2018-06-19 14:17:10
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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,在矩形
中,
,
,E是对角线
上一个动点,F、H为边
上的动点,连
、
交于G点,若
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69046bf17871aa29df090c9cc397e00e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412f4f975713a296f4aa963a7287f5b9.png)
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【推荐2】如图,点A在线段BD上,在BD的同侧作等腰直角
和等腰直角
,CD与BE、AE分别交于点P,M.对于下列结论:①
;②
;③
;④
;其中正确的结论有______ .(写出所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca61809c5ea19badd8727c4ba5b519b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9221f08d6caf349f2d3ea8e28103333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85321385dea099f3f70a48cb246681c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0773f32c590831c80b73c00704db3543.png)
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