如图
与
中,
与
交于点E,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/b5b3199e-e592-482a-bc3c-75b3e7b287c1.png?resizew=212)
(1)求证:
≌
;
(2)当
°,求
的度数.
![](https://img.xkw.com/dksih/QBM/2016/5/6/1574205257441280/1574205263953920/STEM/188503c8925842059e14bbefbc3c1d74.png)
![](https://img.xkw.com/dksih/QBM/2016/5/6/1574205257441280/1574205263953920/STEM/a4efdbdeb39f49e8a3e14c22c168948d.png)
![](https://img.xkw.com/dksih/QBM/2016/5/6/1574205257441280/1574205263953920/STEM/92e588a145e743e58f13a43d54269251.png)
![](https://img.xkw.com/dksih/QBM/2016/5/6/1574205257441280/1574205263953920/STEM/1e254abf186047648e71fc0079cd3c49.png)
![](https://img.xkw.com/dksih/QBM/2016/5/6/1574205257441280/1574205263953920/STEM/79aedf1a5352480997750177f7b40485.png)
![](https://img.xkw.com/dksih/QBM/2016/5/6/1574205257441280/1574205263953920/STEM/430e601a24814f68833063c689c8b192.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/b5b3199e-e592-482a-bc3c-75b3e7b287c1.png?resizew=212)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2016/5/6/1574205257441280/1574205263953920/STEM/0cd62b1cda6049d2a046ba60dda23380.png)
![](https://img.xkw.com/dksih/QBM/2016/5/6/1574205257441280/1574205263953920/STEM/60b9efdf61b044278706f23e800e55f1.png)
(2)当
![](https://img.xkw.com/dksih/QBM/2016/5/6/1574205257441280/1574205263953920/STEM/7d811695d9324bbe92437b5462c0e16f.png)
![](https://img.xkw.com/dksih/QBM/2016/5/6/1574205257441280/1574205263953920/STEM/9c74ce4d15c2452b9603dc9ff74f0a0f.png)
更新时间:2016-12-06 12:31:43
|
【知识点】 全等三角形综合问题
相似题推荐
解答题-证明题
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适中
(0.65)
【推荐1】如图,在△ABC外分别以AB,AC为边作两个大小不同的等腰直角三角形ABD和等腰直角三角形ACE,其中∠DAB=∠CAE=90°,AB=AD,AC=AE.连结DCBE交于F点.
(1)请你找出一对全等的三角形,并加以证明;
(2)直线DC、BE是否互相垂直,请说明理由;
(3)求证:∠DFA=∠EFA.
(1)请你找出一对全等的三角形,并加以证明;
(2)直线DC、BE是否互相垂直,请说明理由;
(3)求证:∠DFA=∠EFA.
![](https://img.xkw.com/dksih/QBM/2018/12/21/2101611224735744/2103491261726720/STEM/71bfb2529b7e40ed8aa33dfe40131bf3.png?resizew=203)
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解答题-证明题
|
适中
(0.65)
【推荐2】定义:对角线相等的凸四边形称为对美四边形.
(2)如图1,在
中,
,
为线段
的垂直平分线上一点(点
位于
上方),若以点
为顶点的四边形是对美四边形,求这个对美四边形的面积.
(3)如图2,
为等腰
底边
上的一点,连接
,过
作
,以
为顶点作
交
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为对美四边形.
(2)如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0be7074f6e39424cd6e9a4e82c157942.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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