如图,在RT△ABC中,AB=AC, D,E是斜边上BC上两点,且∠DAE=45°,在RT△ABC外作△ABF≌△ACD,连接EF,下列结论:①△AED≌△AEF;②△ABE∽△ACD;③BE+DC=DE;④BE=3, DC=4,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2511387eac09f94b376135e4e857b773.png)
![](https://img.xkw.com/dksih/QBM/2019/1/10/2115825338212352/2118801467326464/STEM/668b8413589c449881a69dc6bc99c238.png?resizew=207)
其中正确的个数是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2511387eac09f94b376135e4e857b773.png)
![](https://img.xkw.com/dksih/QBM/2019/1/10/2115825338212352/2118801467326464/STEM/668b8413589c449881a69dc6bc99c238.png?resizew=207)
其中正确的个数是
A.1 | B.2 | C.3 | D.4 |
更新时间:2019-01-21 17:05:41
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【知识点】 相似三角形的判定与性质综合
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