如图,在平面直角坐标系中,
、
,A、B在x轴上,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9d80b2cb1693b354c149e426d9c3ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69e8de1d8d0f1329c1e80bd67f03f465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cb5bf8e2070e0ab43a3985a90801c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8efa4e9eebe76c572fbac1522085868b.png)
![](https://img.xkw.com/dksih/QBM/2022/4/17/2967339743715328/2987217335771136/STEM/4440d2475ff14c8093f3275cb11fdad8.png?resizew=220)
更新时间:2022-05-25 21:32:08
|
【知识点】 根据平行线判定与性质证明
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,
于点D,点F是
上任意一点,过点F作
于点E,且
.
;
(2)若
,
平分
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb49557be665e7dde8543fa2868ec7f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae94174cadb3e1c04e55773463895c2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ed6ea635c2ebd0d9a371a0b9dbd538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302efd5266f7868d8c67f7bb09dc2ddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605f2976297a0deaa1602ef09d6a5afa.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,已知AD∥BC,∠3+∠4=180°,要证∠1=∠2,请完善证明过程,并在括号内填上相应依据:
∵AD∥BC(已知)
∴∠l=∠3( ),
∵∠3+∠4=180°(已知),
∴BE∥DF( ),
∴ = ( ).
∴∠1=∠2( ).
∵AD∥BC(已知)
∴∠l=∠3( ),
∵∠3+∠4=180°(已知),
∴BE∥DF( ),
∴ = ( ).
∴∠1=∠2( ).
![](https://img.xkw.com/dksih/QBM/2019/6/12/2224220261720064/2225560470216705/STEM/21c96ff00336478aa944f52da85cc5cf.png?resizew=162)
您最近一年使用:0次