如图,矩形
中,
,
,E是BC中点,CD上有一动点M,连接
、
,将
沿着
翻折得到
,连接
,
,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b05d6899d398fa4202a751d4c8981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f39f31a107039ce5fdf44f6f33fc3744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c4e9c6934e26ec3436e26619e30923.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/23/766ecb25-6db0-441b-b0cf-3813d50064d5.png?resizew=177)
更新时间:2023-05-19 08:45:02
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【推荐1】如图,在矩形
中,点
在
边上,将
沿
翻折得到
(点
与点
是对应点),点
落在
上.若
,则
的长____________ .
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【推荐2】如图,四边形ABCD是长方形,把△ACD沿AC折叠到△ACD′,AD′与BC交于点E,若AD=9,DC=3,则BE=_____ .
![](https://img.xkw.com/dksih/QBM/2019/8/7/2263679935152128/2264607374524416/STEM/8d5224ae-4644-46b8-81c7-47daf2b4c235.png?resizew=218)
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【推荐1】如图,
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__________ .
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名校
【推荐2】综合实践课上,小聪把一张长方形纸片
沿着虚线
剪开,如图①所示,纸片
较小锐角的顶点
在
上,较长直角边与斜边分别交边
于点
,且
为初始位置,把
沿着
方向平移,当点
到达点
后立刻绕点
逆时针旋转,如图③,直到点
与点
重合停止.为了探求
与
之间的变化关系,设
,请用含
的代数式表示
.
(1)在平移过程中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63abe5f9e5f7bde1b70739bfbb8e4b5f.png)
____________________ ,
(2)在旋转过程中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63abe5f9e5f7bde1b70739bfbb8e4b5f.png)
____________________ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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(1)在平移过程中,
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(2)在旋转过程中,
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【推荐1】在平面坐标系中,正方形ABCD的位置如图所示,点A的坐标为(1,0),点D的坐标为(0,2),延长CB交x轴于点A1,作正方形A1B1C1C,延长C1B1交x轴于点A2作正方形A2B2C2C1,…按这样的规律进行下去,第2021个正方形的面积为 ___ .
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863662937358336/2873907501006848/STEM/e23b2e40fb704d08b350d24111d4a8ef.png?resizew=210)
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【推荐2】如图,在平面直角坐标系中,点
在第二象限,过点B作
轴于点
与反比例函数
图像交于点E、F,连接
,若
为
的中点,四边形
面积为11,则k的值为_____ .
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