如图,点
是矩形
边
上一点,连接
,将
沿
翻折,点
落在点
处,
的角平分线与
的延长线交于点
,若
,当点
从点
运动到点
时,则点
运动的路径长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c3c8bf858c13b295de56e548116db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d786ee723231d4ca87eb9d011a378b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd984e5b2bd4fbb750fff50bc92b88e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.2 | B.3 | C.4 | D.5 |
更新时间:2024-05-11 07:11:34
|
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【推荐1】如图,正方形ABCD的边长为10,点E,F在正方形内部AE=CF=8,BE=DF=6,则线段EF的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/14/09cf5ba0-6e35-482e-9a10-2c1b818b1378.png?resizew=126)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/14/09cf5ba0-6e35-482e-9a10-2c1b818b1378.png?resizew=126)
A.![]() | B.4 | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐2】如图,在平面直角坐标系中,点
,
,点C是线段
的中点,点D是线段
上一点,将
沿直线
翻折得到
,点E落在反比例函数y=
的图象上,若
,则k的值是( )
![](https://img.xkw.com/dksih/QBM/2023/4/13/3215340565684224/3221338964434944/STEM/7377362814a84d2b84de6263817e723c.png?resizew=185)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3793d98d60080b414ac8acbb975e048f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f81b6c03869d27bdb309d94a38a9bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b265d121f9ebc13671a5719604476a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9212e728b36c078188606c9d429389d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://img.xkw.com/dksih/QBM/2023/4/13/3215340565684224/3221338964434944/STEM/7377362814a84d2b84de6263817e723c.png?resizew=185)
A.32 | B.28 | C.24 | D.18 |
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解题方法
【推荐1】古希腊数学家发现“黄金三角形”很美。顶角为
的等腰三角形,称为“黄金三角形”,如图所示,
中,
,
,其中
,又称为黄金比率,是著名的数学常数。作
的平分线,交
于
,得到黄金三角形
;作![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7967a506a4a0d1bed0558aa758f5c52a.png)
交
于
,
交
于
,得到黄金三角形
;作
交
于
,
交
于
,得到黄金三角形
;依此类推,我们可以得到无穷无尽的黄金三角形。若
的长为1,那么
的长为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b398c95494eddc79939f16e66cf4da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee54b9b398ce80cd054b56173fe810f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4e432e970b8d7eefb2bcc408f6b7f30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98474425eb86a28f2b01cec95643ae7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7967a506a4a0d1bed0558aa758f5c52a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3980346f3148d85bb2dabe54854b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc5ea54384d1178ef57afb3b75201007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7816b1594de5cfa7bf48d3c12ac9935a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69e858a2b8ca5932b9e4dd64568b6d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd18f503478337983ea42c95de6daf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f58a4b77df8f1062dc8742a8992e12.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,
的角平分线
相交于点P,若
,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/03beef74-4f24-48c2-a3f4-e5193de041fc.png?resizew=118)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fb907cb90c735c33c6b886bf86923e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75cbf373efe64c4f79a36ab4c3865d56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d18a3ead291d4069b3fd3882a280453.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/03beef74-4f24-48c2-a3f4-e5193de041fc.png?resizew=118)
A.![]() | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
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【推荐1】将一张长为8,宽为4的矩形纸片按如下方式进行操作:
(1)如图1,将矩形纸片折叠,使顶点
与
重合,折痕为
,然后展开恢复原状;
(2)沿着图1中虚线段
,
,
,
剪开,得到①、②、③、④四个三角形;
(3)将图1中的①、②、③、④这四个三角形拼成如图2的四边形
.
![](https://img.xkw.com/dksih/QBM/2021/8/2/2777601910767616/2784636949651456/STEM/be28e5cb-4298-41d2-9922-70ce9b31cdc2.png)
则四边形
的面积为( )
(1)如图1,将矩形纸片折叠,使顶点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)沿着图1中虚线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)将图1中的①、②、③、④这四个三角形拼成如图2的四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://img.xkw.com/dksih/QBM/2021/8/2/2777601910767616/2784636949651456/STEM/be28e5cb-4298-41d2-9922-70ce9b31cdc2.png)
则四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
A.32 | B.25 | C.7 | D.5 |
您最近一年使用:0次
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【推荐2】如图,在
中,
,点
分别在
上,连接
,且满足
.现将
沿
所在直线折叠,当点
恰好落在
边的点
处时,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69e5abe96b7a5d3ed46ff7cdd8a5296d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018fb1bfa58c028322889b7806f5a989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1005d9def461d00556e3aced70ea2f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b678eddee05abd9b4009466ea425e94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/7c0352c4-5616-40c1-95d1-ead8ce392ea5.png?resizew=116)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐1】在矩形
中,P为
边上一点
,
.将
沿
翻折得到
,
的延长线交边
于点
,过点
作
交
于点
,连接
,分别交
,
于点
,
.现有以下结论:①连接
,则
垂直平分
;②四边形
是菱形;③
;④若
,则
;其中正确的结论是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5a35b9e772292d9c758d7d32ac148f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df9b574c6b6a4c878bf425d4fa31d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d3f7e39e5191c28a609be3409108d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be451ce5fad246389ccf4864929d81d.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8bb38a5ab61207e73d73466075a52c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e34b35208c9e507587a947df63ff4137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b7723fcf6ff3932f38c28d994d5a11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d158fc1e5e3ce232e3ee2328c877dffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f923815815940b22f5df246eb2c9f8.png)
A.①②③ | B.①②④ | C.②③④ | D.①②③④ |
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名校
【推荐2】在综合与实践课上,美丽老师让同学们以“矩形纸片的折叠”为主题开展教学活动.如图,矩形
中,
,
,点E、F分别是边
、
上的点,连接
、
,分别将
和
沿
、
翻折,点B、D的对应点分别为点G、H,若
,且C、H、G三点共线,则
的长度是( )
![](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/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc90c2d45477e166b02359525f40aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/fa21f769-9971-4675-928c-849c262bc603.png?resizew=166)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次