如图,已知在Rt△ABC中,∠ACB=90°,BD是△ABC的角平分线,E是AB上一点,且AE=AD,连接ED,作EF⊥BD于F,连接CF.则下面的结论:
①CD=CF;
②∠EDF=45°;
③∠BCF=45°;
④若CD=4,AD=5,则S△ADE=10.其中正确结论的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/0f9f9bb3-32ae-419b-969d-77bf32e7882d.png?resizew=108)
①CD=CF;
②∠EDF=45°;
③∠BCF=45°;
④若CD=4,AD=5,则S△ADE=10.其中正确结论的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/0f9f9bb3-32ae-419b-969d-77bf32e7882d.png?resizew=108)
A.1个 | B.2个 | C.3个 | D.4个 |
更新时间:2019-10-22 15:52:04
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