如图,BE平分∠ABC,∠DBE=∠BED,∠C=72°,则∠AED=_____ °.
![](https://img.xkw.com/dksih/QBM/2020/1/13/2376011236524032/2376710343196672/STEM/cebf4ee654414c08bb6d805c25079bb7.png?resizew=131)
更新时间:2020-01-14 08:12:28
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【推荐1】如图,正方形
的边长为
是
边上的一动点(不与
重合),延长
至点
使
过点
作
的垂线交
的平分线于点
连接
交
于点
连接
.有下列结论:
![](https://img.xkw.com/dksih/QBM/2020/8/21/2532745556836352/2558192669229057/STEM/db51d2e8edc0498cb2bd936d11e88695.png?resizew=165)
①
;
②
;
③
的面积为
;
④
的周长为
.
其中正确的有_______ (把正确结论的序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ba964c27f118895f13672321aebe5f9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5c664aa79a88c035d7ece15220a4c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c317e70165c9e450609caa79479e3219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e045aae53b69142dc957f0b402e7926e.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c54c516dce8408f83411b114a3387bea.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffab24578093dee05cc834c02a8023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b750b79716a7bfb025737f8d7467a6.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d484f018fb102030d0452b978bd810a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
其中正确的有
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【推荐2】如图,在△ABC中,∠C=90°,AD平分∠BAC,DE⊥AB于E,则下列结论.①AD平分∠CDE;②∠BAC=∠BDE;③DE平分∠ADB;④BE+AC=AB,其中正确的是____________
![](https://img.xkw.com/dksih/QBM/2019/10/28/2321644680462336/2326068190986240/STEM/726a028b08ea47be8491c5ae16a7108e.png?resizew=124)
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名校
【推荐2】如图,四边形
内接于
,
为
的直径,过点
作
交
的延长线于点
,延长
,
交于点
,
,若
,
,则
的半径=_______ .
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