1 . 点P在四边形
的对角线
上,直角三角板
的直角边
,
分别交
,
边于点M,N.
对角线
,
的交点,当点Р在点O处时,无论三角板
绕点O怎样转动,我们发现,三角板与正方形重叠部分的面积总等于______;
【类比探究】(2)如图2,在(1)的条件下,改变点Р的位置(P在对角线AC上),若
,则有
.
下面是该结论的证明过程:
证明:过点P作
于点G,作
于点H,
……
请按以上证明思路完成剩余的证明过程;
【迁移探究】(3)如图3,在(2)的条件下,将“正方形
”改为“矩形
”,且
,
,其他条件不变.若
,且
过点B,直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d246f9eceab371ebf47a47c2f11a4ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/9d246f9eceab371ebf47a47c2f11a4ad.png)
【类比探究】(2)如图2,在(1)的条件下,改变点Р的位置(P在对角线AC上),若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d52f125abf9625888d5feb7d6d2b5fd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf295b3a70996eb918ae1a823e1747c.png)
下面是该结论的证明过程:
证明:过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d7566369c178316219bb466a66d062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef7eab528a8dd3e3f328de3b3ac80ee.png)
……
请按以上证明思路完成剩余的证明过程;
【迁移探究】(3)如图3,在(2)的条件下,将“正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/92d71107894329b293117036013dcbda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
您最近一年使用:0次
2 . 【操作与发现】
如图①,在正方形
中,点N,将
绕点A顺时针旋转
,点D与点B重合,从而可得:
.
,
,则正方形
的边长是___________.
(2)如图②,在正方形
中,点M、N分别在边
、
上,
,若
,求证:M是
的中点.
(3)【拓展】如图③,在矩形
,
,
,点M、N分别在边
、
上,连接
、
,
,则
的长是 ___________.
如图①,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/101da161ae17652ccbe7d3f888762c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a760864f397a1df8738e9d8af463c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c8599965e62eae0bf34701f1a914a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe14b7ecc401749db077e8965c25d161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)如图②,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4794cf7c57bdd4825d9e6615e2527a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ad969adb7466b177d9a9cca2de07a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)【拓展】如图③,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88c5025689144c57cf36d1851ebc026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9abe9e42cf396cf527b4ccbd2fefe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
您最近一年使用:0次
3 . 已知有一个正方形,将正方形
沿着B逆时针旋转至
,A,C三点处在同一条直线上,则
的角度为( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-13更新
|
78次组卷
|
2卷引用:湖北省随州市曾都区八角楼初级中学2023-2024学年九年级上学期月考数学试题
名校
4 . 【问题提出】如图①,在正方形
中,点
分别在边
上,
.请判断
与
的数量关系,并说明理由.
【类比探究】如图②,在矩形
中,
,将矩形
沿
折叠,使点
落在
边上的点
处,得到四边形
交
于点
,连接
交
于点
.则
与
之间的数量关系为 .
【拓展应用】在(2)的条件下,若
,
,则
的长为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d13ef4c60c286ae39561ed8e2dedaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28bbdea60708bebc259452cc5e07ea5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
【类比探究】如图②,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/483e5e695460e1752a7f9b0ee3f0b6fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/ce606a1a1c966a5ef4c58cd007c63481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
【拓展应用】在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8773565d2c8212644c1b36c17ca4379f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56a2e0b739038c0e756aa511920fa300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/6/c6e0c618-e291-42ce-8d7e-3c67ca4af4e7.png?resizew=292)
您最近一年使用:0次
2023-09-27更新
|
318次组卷
|
3卷引用:2024年湖北省随州市曾都区淅河镇初中联考中考一模数学试题
5 . 已知正方形
,
为对角线
上一点.
(1)如图1,连接
,
,求证:
;
(2)如图2,F是
延长线上一点,
,
交
于点
,判断
的形状,并说明理由;
(3)在(2)的条件下,若
,
,连接
,直接写出
的长为___________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/13/c41edad6-5afb-4c14-a618-ddb75f7d28c5.png?resizew=349)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b42a0dedbefd2d1eb72264e40c806b3.png)
(2)如图2,F是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbfc332950d19764830174dba000b9bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e977cb08909ddb77a8c1236bca620ac5.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6a566c7c1382558bb4449c6c29daa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
您最近一年使用:0次
6 . 如图,正方形
的边长为
,点
分别在边
上,且
,
,
,将
沿
折叠,点
落在正方形
内一点
为线段
上一动点,过点
作
交
于点
,则
的长为______ ,
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669ec5b1c877d62d014b28e3e3bf5b5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41bf8d657ce3958eb7b4d8a90102a47c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8028a6eeea6c61cae7b9b09e822e53e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/045b6627c9e9a5195dcc9b7b7e115d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab815649946f118c3729cd792b706dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.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/28a17e52cbacdf241e511258199173c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca14f6100d829f197a5dac5197bbe0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04c33bd600e8cd9d2fb8738449fa425.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/6/2e910466-3680-4da2-89fc-1a8c5cc6016f.png?resizew=153)
您最近一年使用:0次
7 . 综合与探究
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/8/93b15196-d6ea-427e-a55a-7ddd608bcbf2.png?resizew=479)
(1)如图1,在正方形
中,点E,F分别在边
上,且
,则线段
与
的之间的数量关系为______;
(2)【类比探究】如图2,在矩形
中,
,
,点E,F分别在边
上,且
,请写出线段
与
的数量关系,并证明你的结论.
(3)【拓展延伸】如图3,在
中,
,
,
,D为
上一点,且
,连接
,过点B作
于点F,交
于点E,求
的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/8/93b15196-d6ea-427e-a55a-7ddd608bcbf2.png?resizew=479)
(1)如图1,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ced324a15510f9cf7518d8c277c6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e22ba3e6e1c1d6b12d9b8baa8d1f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
(2)【类比探究】如图2,在矩形
![](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/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ced324a15510f9cf7518d8c277c6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e22ba3e6e1c1d6b12d9b8baa8d1f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
(3)【拓展延伸】如图3,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c897a54f2e36bc4b52fba74b41c89d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
2023-04-30更新
|
381次组卷
|
4卷引用:湖北省随州市曾都区4校联考2022-2023学年九年级下学期5月月考数学试题
名校
8 . 如图,在正方形
外取一点
,连接
、
、
.过点
作
的垂线交
于点
.若
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0f08eb47a5429245f4c162d0355a45.png)
.下列结论:①
;②点
到直线
的距离为
;③
;④
;⑤
.其中正确结论的序号是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c17d3ece9b7096aa5db32383448a072f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8405158751b8479e4cdb71bb9a950a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd94ce5e3c9daeb9129d945a45a953e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa015dbde53c3a8b1c603bd9c1eebdf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66939e4caddc41bc8db4bc8b914626ee.png)
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27卷引用:2019年湖北省随州市随县九年级学业考试数学试题
2019年湖北省随州市随县九年级学业考试数学试题【全国百强校】广东省华南师范大学附属中学2018届九年级上学期阶段测试(一)数学试题四川成都市武侯区西蜀实验学校2018-2019学年八年级上学期期末校考数学试题福建省宁化县城关片区四校2019届九年级上学期第一次月考数学试题2018年广东省广州市从化市中考数学二模试题2019年广东省深圳市南山区育才二中三模2021年辽宁省抚顺市顺城区中考二模(初中毕业生第三次质量调查)数学试题2021年河南省淮滨县第一中学中考九年级数学模拟试题(已下线)2022年山东省泰安市中考数学模拟(已下线)专题13 特殊的平行四边形-2022年中考数学真题分项汇编(全国通用)(第1期)(已下线)矩形、菱形、正方形01技法提练2023年山东省泰安市泰山区实验中学九年级第二次模拟数学试题(已下线)专题9.3 (特殊)的平行四边形中的最值与综合压轴问题 专题讲练-2022-2023学年八年级数学下册重难题型全归纳及技巧提升专项精练(苏科版)(已下线)专题5.6 特殊四边形(中考真题专练)-2022-2023学年八年级数学下册同步精品课堂(浙教版)(已下线)专题18.3 (特殊)的平行四边形中的最值与综合压轴问题 专题讲练-2022-2023学年八年级数学下册重难题型全归纳及技巧提升专项精练(人教版)(已下线)专题5.3 特殊的平行四边形中的最值与综合压轴问题 专题讲练-2022-2023学年八年级数学下册重难题型全归纳及技巧提升专项精练(浙教版)广东省广州市海珠区六中珠江中学2023-2024学年九年级上学期开学考试数学试题河南省郑州市第四十七初级中学2023-2024学年九年级上学期第一次月考数学试题湖北省孝感市孝南区部分学校2021-2022学年八年级下学期月考数学试题(已下线)期末压轴专题分类01(必刷60题15种题型专项训练)-2023-2024学年九年级数学上学期期末考点大串讲(北师大版)2023年新疆乌鲁木齐经济技术开发区九年级中考适应性考试数学试题海南省海口市龙华区海南省农垦中学2023-2024学年八年级上学期期末考试数学试题(A卷)江苏省启东市折桂中学2023-2024学年八年级下学期第一次综合训练数学试题2023年新疆乌鲁木齐市经开区中考5月份数学模拟预测题2023年新疆乌鲁木齐经开区(头屯河区)九年级适应性测试数学模拟预测题(已下线)重难点03+平行四边形与特殊平行四边形(8大题型+满分技巧+限时分层检测2)-2024年中考数学【热点·重点·难点】专练(全国通用) - 副本广东省广州市海珠区绿翠现代实验学校2023-2024学年八年级下学期期中数学试题
9 . 如图,正方形
的边长为
点
,
分别在边
,
上,且
,
的延长线交
的延长线于点
,
的延长线交
的延长线于点
,连接
,
,
.
______
;
填
或
或![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be4a42e8fb5834583d6545c6fb572d05.png)
(2)设
,
①
的面积
有变化吗?如果变化,请求出
与
的函数关系式;如果不变化,请求出定值;
②请直接写出使
是等腰三角形的
值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9ab51e0bae2c3b0f6c556ea9cdf7ad.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26526faf0e64ce31688026630b502427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95777a5aa465745ef2011bd042b3216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d890499dca9a8ef30addafe41d6e771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7942da6c3fc4005256fb1458557c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be4a42e8fb5834583d6545c6fb572d05.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffcb0816ee2da7ddd071156a900f9eed.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f8b3d45ae1743416253d835c054456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
②请直接写出使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bde5e96c203f387b2004b4abf5f839f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2023-03-21更新
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108次组卷
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2卷引用:2023年湖北省随州市中考数学模拟试卷
解题方法
10 . 阅读下面材料.
小炎遇到这个一个问题:如图1,点E、F分别在正方形
的边
上,
,连接
,则
,试说明理由.
小炎是这样思考的:要想解决这个问题,首先应想办法将这些分散的线段相对集中,她先尝试了翻折、旋转、平移的方法,最后发现线段
是共点并且相等的,于是找到解决问题的方法.她的方法是将
绕着点A逆时针旋转90°得到
,再利用全等的知识解决这个问题(如图2).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/68fda8dd-fbc7-4543-b789-8679871cebcc.png?resizew=487)
参考小炎同学思考问题的方法,解决下列问题:
(1)写出小炎的推理过程;
(2)如图3,四边形ABCD中,
,
,点E、F分别在边
上,
,若
、
都不是直角,则当
与
满足于__________关系时,仍有
;
(3)如图4,在
中,
,
,点D、E均在边BC上,且
,若
,
,求DE的长.
小炎遇到这个一个问题:如图1,点E、F分别在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a20cb2c77ea29b6eabbc477bc3743859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192155e6a3aade305b76b1eb7c75e30c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9af98a1a048b1e2f7c71e83c33498c.png)
小炎是这样思考的:要想解决这个问题,首先应想办法将这些分散的线段相对集中,她先尝试了翻折、旋转、平移的方法,最后发现线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82d579a717399137b8c6d475d33cd4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbd6f0a0412d0f43ce1f7c1d530e56e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/68fda8dd-fbc7-4543-b789-8679871cebcc.png?resizew=487)
参考小炎同学思考问题的方法,解决下列问题:
(1)写出小炎的推理过程;
(2)如图3,四边形ABCD中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a20cb2c77ea29b6eabbc477bc3743859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192155e6a3aade305b76b1eb7c75e30c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9af98a1a048b1e2f7c71e83c33498c.png)
(3)如图4,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76805974fefbe166b90d260e822ab5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb08f6a798dc293f3d8de281190f65e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f7d9f5e71bfef8188b1216c1276c2d.png)
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