已知:如图,在
中,
是边
上的中线,点E在线段
上,且
,过点B作
,交线段
的延长线于点F.
(1)求证:
;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad730736a2951a83c1a2aaf5d860f3a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f572de8798c6eb993ede7606cf7402e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/0f5a5cf2-a820-4e48-a877-a0a0ecfaa543.png?resizew=162)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0903285efdf829ddedf887a9218e2c41.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cbe0f4667b1af8a1a1eaad49af0734c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db3b9efe68349a0fc3f477d80a2a482.png)
更新时间:2024-01-29 22:34:22
|
【知识点】 相似三角形的判定与性质综合
相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,已知点D是
的边AC上的一点,连接
,
,
.
求证:
∽
;
求线段CD的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34ff9d4fdd0d176042505b7aac016852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ca286d8e45a78178108a3b04622798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fafda083ff52c0f3fb98e4df6231a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fceeeffa58750d1fa59a3e470731d397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1baca09215d12421a58bd6a48ae16c35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af7ec89310dae69a9b978060f523cd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c39a76242e2892706db31f686b4323a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac0c12379ff58d8ddf66547d7a873baf.png)
![](https://img.xkw.com/dksih/QBM/2018/12/15/2097246252941312/2100056473370624/STEM/67345e0a90a04e10afa61df3f64c1b08.png?resizew=207)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图所示,AB是⊙O的直径,AD是弦,∠DBC=∠A.
![](https://img.xkw.com/dksih/QBM/2012/5/15/1573375134081024/1573375187238912/STEM/84e0a4381b9a411f8e11fca176b4c7b7.png?resizew=165)
(1)求证:BC与⊙O相切
(2)若OC⊥BD,垂足为E,BD=6,CE=4,求AD的长.
![](https://img.xkw.com/dksih/QBM/2012/5/15/1573375134081024/1573375187238912/STEM/84e0a4381b9a411f8e11fca176b4c7b7.png?resizew=165)
(1)求证:BC与⊙O相切
(2)若OC⊥BD,垂足为E,BD=6,CE=4,求AD的长.
您最近一年使用:0次