题型:解答题
难度:0.85
引用次数:2841
题号:17735946
已知:如图,
,
和
互余,
于点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597bbee9476e853b2dbd7f30f367444e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e49bc7561f3f38e57ce30e3c00dcb58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/1/c16143b8-5ee4-4959-9a04-5c46bd8c9125.png?resizew=224)
更新时间:2022-12-31 19:24:55
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【推荐1】如图,在河的北岸种植一排小树AB,点C在河的南岸,已知在△ABC中,D是BC边的中点,AD的长度和方向都已确定,现在想要过点C也种植一排与AB平行的小树,小明使用了如下方法:延长AD到E,使DE=DA,连接EC,那么就能得知AB∥EC,请你说明这样做的理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/7349fc18-2d53-4ad7-b98c-c2ede03ef7d4.png?resizew=154)
您最近一年使用:0次
解答题-问答题
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较易
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【推荐2】如图,在
中,
是
上一点,
交
于点
,
,请判断
与CF是否平行?并说明你的理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
名校
【推荐2】如图,在
中,
,BE平分
,AM
BC于点M,AD平分
,交BC于点D,AM交BE于点G.
![](https://img.xkw.com/dksih/QBM/2020/11/10/2590074794827776/2595403375042560/STEM/daf43d1b97914382a0d09a06d0f986bf.png?resizew=222)
(1)求证:
;
(2)判断直线BE是否垂直平分线段AD,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65b57dcaff8632c9a3d5190fb79db868.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee2ba015fc9f3700a8c9ccc423cf1c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ee49ad5a0dd93c96afa428ce55bc00.png)
![](https://img.xkw.com/dksih/QBM/2020/11/10/2590074794827776/2595403375042560/STEM/daf43d1b97914382a0d09a06d0f986bf.png?resizew=222)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b0823c6baf87482ce9fd5733f6ac50.png)
(2)判断直线BE是否垂直平分线段AD,并说明理由.
您最近一年使用:0次