如图,在正方形ABCD中,点E、F分别在边BC、CD上,连接AF、EF,过点E作
交AD于点G,连接GF,若
,且
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/f80a6653-f95d-4951-80fa-bf61ce8c3295.png?resizew=230)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/336ef1ac24b20d9a4601d72928f58d4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78330d24bb5f61954df74c994a2caf25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5304595b137a9492f08860bbc169828b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f517eb167ce99dcd8956da2160ff2e06.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/f80a6653-f95d-4951-80fa-bf61ce8c3295.png?resizew=230)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2022-11-18 16:19:40
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【推荐1】已知:
中,
为
边中点,过点
的直线交
延长线于
,交
于
,记
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91931ae2398daf3cef23eead79f1226b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/801cb715c421111397f0a927880f37b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/4/26ce0817-f165-4ac7-8152-51d56f76a593.png?resizew=152)
A.2 | B.![]() | C.![]() | D.1 |
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【推荐1】如图,在
的垂直平分线DE交BC的延长线于点E,则CE的长为( )
![](https://img.xkw.com/dksih/QBM/2012/10/17/1573532708864000/1573532750536704/STEM/3355b70670774f58ba76393dd7dee266.png?resizew=140)
![](https://img.xkw.com/dksih/QBM/2012/10/17/1573532708864000/1573532750536704/STEM/051402a6175e4eb4bf26a3334d137754.png?resizew=322)
![](https://img.xkw.com/dksih/QBM/2012/10/17/1573532708864000/1573532750536704/STEM/3355b70670774f58ba76393dd7dee266.png?resizew=140)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,已知
,
,
,
,则
的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200e7c96ea047b361400482783f98651.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d657c3d6f1385e9c745d199cc3d3d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/24/e2ad5031-2adc-4203-b6e8-a7e3562ddb78.png?resizew=152)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】在平面直角坐标系中,直线
与x轴交于点
,如图所示依次作正方形
O、正方形
、…、正方形
使得点
、…在直线l上,点
、…在y轴正半轴上.点
的坐标是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/24/69870cd3-0026-437b-90d6-80d85faa3240.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db0a1cbf7b0ed76c443b953af8734d0.png)
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【推荐2】如图,在矩形ABCD中,AD=m,E是AD边上的一个动点,点F,G,H分别是BC,BE,CE的中点.当四边形EGFH为正方形时,
( )
![](https://img.xkw.com/dksih/QBM/2021/7/13/2763409154842624/2798679277625344/STEM/a66569b1-9fc4-4804-bd37-b36d2c604f2f.png?resizew=212)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd57f63e71af737f5ea683cc4b85c80.png)
![](https://img.xkw.com/dksih/QBM/2021/7/13/2763409154842624/2798679277625344/STEM/a66569b1-9fc4-4804-bd37-b36d2c604f2f.png?resizew=212)
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【推荐2】在Rt△ABC中,∠C=90°,那么sin∠B等于( )
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