如图,已知E为长方形纸片
的边
上一点,将纸片沿
对折,点D的对应点
恰好在线段
上,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b9fd05bb80024423212e0989294782.png)
;
(2)求
的长.
![](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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b9fd05bb80024423212e0989294782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26b33f5b71039c35ac5e93795e254f9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
更新时间:2024-05-11 20:58:08
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相似题推荐
解答题-问答题
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适中
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【推荐1】如图,
的平分线
与
的平分线
相交于点
,过点
作
交
于点
,交
于点
,若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d890499dca9a8ef30addafe41d6e771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a078495ba47076ccaa28b46f765d80.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71e6ea7333dbc78d0a7b9bc3892f940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6370d6c626bdabf1fc694501ee6c714f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/2019/8/13/2267999723421696/2269159107280896/STEM/2c813f2641864188abd4df3561e02688.png?resizew=207)
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【推荐2】在矩形纸片
中,
,
.将矩形纸片折叠,使点B与点D重合,点A的对应点为
.
;
(2)连接
,求证:四边形
是菱形;
(3)求折痕
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11fc7b0e514bbe36125c5591d3aca0d1.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d868d2cce5d6619ddb7724f48d317c.png)
(3)求折痕
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
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【推荐1】已知一次函数图像与直线
平行,且过点
.
(2)求该一次函数与坐标轴围成的三角形的周长 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f663113d04234101e161946bfbfe6234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0b2a929250e835ae150332d80a3ea0a.png)
(2)求该一次函数与坐标轴围成的三角形的
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【推荐2】【问题提出】
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/82f3cfe5-8920-4ee6-9d16-2e3cc4ca7d79.png?resizew=301)
(1)如图①,在
中,
,
,
.若点P是边
上一点,则
的最小值为______;
【问题探究】
(2)如图②,在
中,
,
,点E是
的中点.若点P是边
上一点,试求
的最小值;
【问题解决】
(3)某市一湿地公园内有一条四边形ABCD型环湖路,如图③所示.已知
米,
米,
,
,
.为了进一步提升服务休闲功能,满足市民游园和健身需求,现要修一条由
连接而成的步行景观道,其中,点E,F分别在边
上.为了节省成本,要使所修的这条步行景观道最短,即
的值最小,求此时
的长.(路面宽度忽略不计)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/82f3cfe5-8920-4ee6-9d16-2e3cc4ca7d79.png?resizew=301)
(1)如图①,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
【问题探究】
(2)如图②,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2d97b922f251e8e02b272778bb44635.png)
【问题解决】
(3)某市一湿地公园内有一条四边形ABCD型环湖路,如图③所示.已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0cbb74e32bdb858730c0a23945c5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8412219eda456884c1cf204c2a3003cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884e3f9d8262bb555ac2af7637168563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6143655a9382806847a9a7bfd28d7ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df7fc746f8c4801d8f2f0471ba3297e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a5fdcb0e05be3043c9ce857b7180d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f95fd176854673d22eb930f45103d76.png)
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【推荐1】如图,将一矩形纸片OABC放在平面直角坐标系中,O(0,0),A(6,0),C(0,3),动点F从点O出发以每秒1个单位长度的速度沿OC向终点C运动,运动
秒时,动点E从点A出发以相同的速度沿AO向终点O运动,当点E、F其中一点到达终点时,另一点也停止运动设点E的运动时间为t:(秒)
(1)OE= ,OF= (用含t的代数式表示)
(2)当t=1时,将△OEF沿EF翻折,点O恰好落在CB边上的点D处
①求点D的坐标及直线DE的解析式;
②点M是射线DB上的任意一点,过点M作直线DE的平行线,与x轴交于N点,设直线MN的解析式为y=kx+b,当点M与点B不重合时,S为△MBN的面积,当点M与点B重合时,S=0.求S与b之间的函数关系式,并求出自变量b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
(1)OE= ,OF= (用含t的代数式表示)
(2)当t=1时,将△OEF沿EF翻折,点O恰好落在CB边上的点D处
①求点D的坐标及直线DE的解析式;
②点M是射线DB上的任意一点,过点M作直线DE的平行线,与x轴交于N点,设直线MN的解析式为y=kx+b,当点M与点B不重合时,S为△MBN的面积,当点M与点B重合时,S=0.求S与b之间的函数关系式,并求出自变量b的取值范围.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/8/6a2af495-2e42-479b-8a84-e4a859f13d5b.png?resizew=161)
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【推荐2】在长方形
中,
,
,点E是AD边上的一点,将
沿
折叠,点A的对应点为点F,射线
与线段
交于点G.
(1)如图1,当E点和D点重合时,求证:
;
(2)如图2,当点F正好落在矩形的对角线
上时,求
的长度;
(3)如图3,连接
,若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ee826937d2add7a93aaa1422f8b736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/23/eedb453e-4d66-42d8-a542-bebbc33e1e14.png?resizew=472)
(1)如图1,当E点和D点重合时,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b0eb389bbe576cf8d7d346e2390f95.png)
(2)如图2,当点F正好落在矩形的对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
(3)如图3,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e40edf734ab189f92678596c508f59d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d390df2733a81db86f0556dba8af0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
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【推荐3】某班数学课题学习小组对矩形内两条互相垂直的线段与矩形两邻边的数量关系进行探究,提出下列问题,请你给出证明:
(1)【图形认知】如图①,在正方形
中,
,
交
于点
,则
______(填比值);
(2)【探究证明】如图②,在矩形
中,
,
分别交
、
于点
、
,
分别交
、
于点
、
,求证:
;
(3)【结论应用】如图③,将矩形
沿
折叠,使得点
和点
重合,若
,
.求折痕
的长;
(4)【拓展运用】如图④,将矩形
沿
折叠,使得点
落在
边上的点
处,点
落在点
处,得到四边形
,若
,
,
,请求点P到直线
的距离.
(1)【图形认知】如图①,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876bb8ce0ca53475fa091ffd18bdc94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d078b640a7b03d4d4aa1f2b1c84cd27.png)
(2)【探究证明】如图②,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de64cbea23ec8a57a4705d9f16297d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450d0c8cdc114d1d6ba7f69382d9df3e.png)
(3)【结论应用】如图③,将矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](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/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(4)【拓展运用】如图④,将矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0363419eabe432409a7f04598450a396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0235d73dcba21676d5b9d08fced4ee60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/efe378bb-061b-4a14-bfc9-465789937b67.png?resizew=662)
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