如图,AD是△ABC的高线,E为AC上一点,BE交AD于点F,且BF=AC,FD=CD.求证:AD=BD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/16/d9bf405f-75bc-40e5-8b67-c3cbdabfc320.png?resizew=125)
更新时间:2018-07-25 19:06:07
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【知识点】 全等的性质和HL综合(HL)
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解答题-证明题
|
较易
(0.85)
【推荐1】如图,已知
是
平分线上的一点,
,
,垂足分别是点
,
,
与
交于点
.
求证:
(1)
;
(2)
是
的垂直平分线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1e98c3ba2bb2199c1985e4d3728639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb69be70ba0babb236757648695faca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/28/eb6c594c-c3a9-411b-9964-dfc1345bf2e6.jpg?resizew=153)
求证:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd01a1d86c3507e2552942b79d67c5a1.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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解答题-证明题
|
较易
(0.85)
名校
【推荐2】已知:如图,在
中,
,
为
的外角平分线,交
的延长线于点
,且
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59f5c3923354587bf3b08d0538af208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f806c8a71ab6093a69b894b290bbe00d.png)
您最近一年使用:0次