如图,四边形ABCD是正方形,E是边BC上的任意一点,∠AEF=90°,且EF交正方形外角的平分线CF于点F,过点C作CH⊥DF,交DF的延长线于点H.若AB=4,BE=
BC,则CH=_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/a496d31a-6c60-43e1-9276-ca704a32bacd.png?resizew=220)
更新时间:2021-04-15 11:01:08
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【推荐1】已知:如图,等腰直角
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【推荐2】已知如图等腰
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【推荐1】如图,已知正方形ABCD,E为边BC上一个动点(E点不与B、C重合),F为BC延长线上的一个动点,且有BE=CF,AE交BD于H,连接DF,过F作FG⊥BD于G,连接AG、EG,则下列结论: ①四边形AEFD为菱形;②AG=EG;③当E为BC中点时,tan∠BGE=
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【推荐2】如图,正方形ABCD的边长为4,E为AB的中点,将△ADE沿直线DE折叠后,点A落在点F处,DF交对角线AC于G,则FG的长是________ .
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【推荐2】如图,在矩形ABCD中,E为CD上一点,若△ADE沿直线AE翻折,使点D落在BC边上点D′处.F为AD上一点,且DF=CD',EF与BD相交于点G,AD′与BD相交于点H.D′E∥BD,HG=4,则BD=__ .
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