如图1,在矩形
中,
,
,点E在
上,
,点F在
上,
,作射线
.点P从点A出发沿
向点D运动,将矩形沿
折叠,点A落在点G处.设点P运动的路径长为x.
______;
②当
时,
与
全等吗?请说明理由;
(2)当线段
的长最小时,求
的值?
(3)③若点G落在射线
上,求x的值;
④请直接写出点G到射线
的距离(用含x的式子表示)______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc5df62e8ac9c74a46462519b95479a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d64e0206b1814c35cc96bd2b6b12239a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a71a9d21f77e9535de152bb33f802bb.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729684f958ad60b8e905fe1e1da53c03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
(2)当线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/677b7072bfdeb8df24048a586525d56c.png)
(3)③若点G落在射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
④请直接写出点G到射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
更新时间:2024-05-19 10:15:09
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相似题推荐
解答题-问答题
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较难
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【推荐1】已知,正方形ABCD的边长为6,菱形EFGH的三个顶点E,G,H分别在正方形ABCD边AB,CD,DA上,AH=2.
(1)写出菱形EFGH的边长的最小值;
(2)请你探究点F到直线CD的距离为定值;
(3)连接FC,设DG=x,△FCG的面积为y;
①求y与x之间的函数关系式并求出y的取值范围;
②当x的长为何值时,点F恰好在正方形ABCD的边上.
(1)写出菱形EFGH的边长的最小值;
(2)请你探究点F到直线CD的距离为定值;
(3)连接FC,设DG=x,△FCG的面积为y;
①求y与x之间的函数关系式并求出y的取值范围;
②当x的长为何值时,点F恰好在正方形ABCD的边上.
![](https://img.xkw.com/dksih/QBM/2019/5/30/2214606050926592/2217730505973760/STEM/2e109fdba2a143079258d5bf4414bbd5.png?resizew=142)
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【推荐2】如图,在
中,
,
,点
是边
所在直线上的一个动点,连接
,将
绕点
按逆时针方向旋转
得到
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/a3869d47-d9cb-4544-ae4e-df181c83e821.png?resizew=480)
(1)如图1,当点
在
的延长线上时,求证:
.
(2)如图2,若点
从点
运动到点A.
①
的周长是否存在最小值,若存在,求出最小值,若不存在,请说明理由.
②如图3,过点
作
的垂线,与直线
交于点
,作点
关于直线
的对称点
,直线
交直线
于点
,若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1ef20fa326183dc9cf2a62d541030c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/a3869d47-d9cb-4544-ae4e-df181c83e821.png?resizew=480)
(1)如图1,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
(2)如图2,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a9f49a7c376a6dea7ebcdb42cce2df.png)
②如图3,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3171b3d11c6f4619e189677345357508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f176ea7b53279ae48377dd913d8ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
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【推荐1】如图,四边形
是矩形纸片且
,对折矩形纸片
,使
与
重合,折痕为
,展平后再过点
折叠矩形纸片,使点
落在
上的点
处,折痕
与
相交于点
,再次展开,连接
,
.
![](https://img.xkw.com/dksih/QBM/2019/7/9/2243022133944320/2243167445917696/STEM/2b0e3c9f0d0f4b4795bfa9db653d9115.png?resizew=194)
(1)连接
,求证:
是等边三角形;
(2)求
,
的长;
(3)如图,连接
将
沿
折叠,使点
落在点
处,延长
交
边于点
,已知
,求
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/411b38a18046fea8e9fab1f9f9b80a5f.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/2019/7/9/2243022133944320/2243167445917696/STEM/2b0e3c9f0d0f4b4795bfa9db653d9115.png?resizew=194)
(1)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea87072d1ccedbc0491f781952e75e87.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
(3)如图,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a845bc25c60e00f3467b6037cdc11f11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c015d99f2677951bdcd0447240ef93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cbacaabd2a70b326b9e9132b0a8c038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2019/7/9/2243022133944320/2243167445917696/STEM/a3e0fd6e26f74635ae3d8e40bd4992bb.png?resizew=181)
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解答题-问答题
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较难
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【推荐2】如图,矩形ABCD中,E是AD的中点,将
沿
折叠后得到
,且G点在矩形ABCD内部,将BG延长交DC于点F.
![](https://img.xkw.com/dksih/QBM/2021/1/4/2629046792757248/2630484307050496/STEM/ba4fdbfd19844ec097bdf4107651c42d.png?resizew=214)
(1)判断GF与DF之长是否相等,并说明理由.
(2)问题解决:若
,
,求AD的值.
(3)类比探究:若
,求
的值.
![](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/37dcb0289f28b8e5c6aa8e9c1adb804b.png)
![](https://img.xkw.com/dksih/QBM/2021/1/4/2629046792757248/2630484307050496/STEM/ba4fdbfd19844ec097bdf4107651c42d.png?resizew=214)
(1)判断GF与DF之长是否相等,并说明理由.
(2)问题解决:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fad56c90f485f903d59b20e80081819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/430b77d8d2a99713b192dc729ddc2275.png)
(3)类比探究:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f572ee9de845d208e9921392b301534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d1be9b1e742b25e355af14502549cb.png)
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较难
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【推荐1】如图,在
中,
,
,
,点M为边
的中点.点Q从点A出发,沿
以每秒1个单位长度的速度向终点C运动,同时点P从点C出发,以每秒2个单位长度的速度先沿
运动到点B,再沿
向终点A运动,以
为邻边构造
,设点Q运动的时间为t秒.
边上时,求t的值;
(2)当点P在边
上运动时,设
的面积为
,求S与t之间的函数关系式;
(3)连接
,直接写出
将
分成的两部分图形面积相等时t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e1bcd4a9a1f640dd8013d44e1a60d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96d9f661c6631ebfbafd047644f871e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)当点P在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96d9f661c6631ebfbafd047644f871e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64afd46111003aac508a003d2319d20a.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96d9f661c6631ebfbafd047644f871e.png)
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名校
【推荐2】如图,E,F分别为正方形ABCD的边AB,BC的中点,AF分别与DE,BD相交于点M,N.
![](https://img.xkw.com/dksih/QBM/2022/3/23/2948848524763136/2981479597391872/STEM/cbb77f13-fb61-40b1-8a27-0194691c0038.png?resizew=164)
(1)求证:
;
(2)若AB=2,求AM的值;
(3)直接写出
的值.
![](https://img.xkw.com/dksih/QBM/2022/3/23/2948848524763136/2981479597391872/STEM/cbb77f13-fb61-40b1-8a27-0194691c0038.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eaa2a727920c40bde100bbce2b5a4d.png)
(2)若AB=2,求AM的值;
(3)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c63421222ee1c4c06cd0cbdc9dd1f2.png)
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解答题-问答题
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名校
【推荐1】(1)如图1,四边形ABCD中,BC=
,AD=
,CD=
,∠A=120°,∠ADC=90°,求四边形对角线BD的长;
![](https://img.xkw.com/dksih/QBM/2022/4/20/2962075516395520/2962861670334464/STEM/f07a3444-9749-4768-84c7-99a5fb271192.png?resizew=184)
(2)如图2,四边形ABCD是某农业种植基地的的试验田,AB=BC=CD=6km,∠ABC=60°,∠BCD=150°,点E为一处灌溉井,E在AB上,BE=4km,为提升种植质量和产量,现过点E建一条笔直的浇灌水渠l,并改动点A的位置至A'处,使得A′与B关于l对称.改建试验田(四边形A'BCD)时,面积是否有最大值?如果有,当面积最大时,求A'B的长及此时水渠l与AB所夹锐角的度数;如果没有,说明理由.(结果保留根号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01961669cd597f61fa48e9853d678bb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27ff057bd4c1e5c216ed4e338af8949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7881094ce2f907c3aaf664318ecd3e2d.png)
![](https://img.xkw.com/dksih/QBM/2022/4/20/2962075516395520/2962861670334464/STEM/f07a3444-9749-4768-84c7-99a5fb271192.png?resizew=184)
(2)如图2,四边形ABCD是某农业种植基地的的试验田,AB=BC=CD=6km,∠ABC=60°,∠BCD=150°,点E为一处灌溉井,E在AB上,BE=4km,为提升种植质量和产量,现过点E建一条笔直的浇灌水渠l,并改动点A的位置至A'处,使得A′与B关于l对称.改建试验田(四边形A'BCD)时,面积是否有最大值?如果有,当面积最大时,求A'B的长及此时水渠l与AB所夹锐角的度数;如果没有,说明理由.(结果保留根号)
![](https://img.xkw.com/dksih/QBM/2022/4/20/2962075516395520/2962861670334464/STEM/c3fdf0d6-9b16-49db-bd2c-63d4c7ee529b.png?resizew=240)
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解答题-证明题
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较难
(0.4)
【推荐2】如图,已知矩形ABCD,点E在边CD上,连接BE,过C作CM⊥BE于点M,连接AM,过M作MN⊥AM,交BC于点N.
![](https://img.xkw.com/dksih/QBM/2022/1/14/2894275747332096/2950811270742016/STEM/806111e1-f0cc-46b3-9e1e-0d3f7f5e4676.png?resizew=534)
(1)求证:△MAB∽△MNC;
(2)若AB=4,BC=6,且点E为CD的中点,求BN的长;
(3)若
,且MB平分∠AMN,求
的值.
![](https://img.xkw.com/dksih/QBM/2022/1/14/2894275747332096/2950811270742016/STEM/806111e1-f0cc-46b3-9e1e-0d3f7f5e4676.png?resizew=534)
(1)求证:△MAB∽△MNC;
(2)若AB=4,BC=6,且点E为CD的中点,求BN的长;
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eadf5a8a817672b2f4c8869c5b54810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a89a76a185fb2dcb73c065c3fd3dde.png)
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