1 . 已知,在平面直角坐标系中,
,
两点的坐标分别为点
,点
,将线段
绕点
逆时针旋转
得到
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/840490de-85ba-4d14-aab4-52fe3994d99a.png?resizew=425)
(1)若
,
①如图1,若
,直接写出点
的坐标 ;
②如图1,若点
为
中点,点
在
轴负半轴上一点,连接
,求证:
平分
;
(2)如图2,若
为
边上一点,
为
延长线上一点,
,连接
,将线段
绕点
顺时针旋转
得到
.
①连接
,判断
的形状,并证明.
②连接
,当
,线段
最短.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4efe37da0c496f06d80a5a3942de027d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6abfb539b49542385f30b9f1a9839c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc18e0da7f7c3bbf42159c9cc5e2ba33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/840490de-85ba-4d14-aab4-52fe3994d99a.png?resizew=425)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac762a2899a58faa0d3ab44f1281fa.png)
①如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
②如图1,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261060cea53b4bf20c7d8573d19a9d3b.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebbd6f810eb8295b6097786ac13bb83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdc9f4a99b567a6ee4be3943beeddca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231b861d6d1f1d0b9f52b041cb40eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ffc7d1af9053b027cf9e726f5367.png)
①连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850e8b971c25dfdf4f5c648a40df9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35140afa56dab784f773780d780c832e.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68014da348365a57f2e417231c3be258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
您最近一年使用:0次
2024-01-12更新
|
87次组卷
|
2卷引用:湖北省武汉市光谷实验中学2023-2024学年八年级上学期月考数学试题
2 . 如图,在平行四边形
中,
,
,连接
,且
,
平分
交
与于点
.点
在
边上,
,若线段
(点
在点
的左侧)在线段
上运动,
,连接
,
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06201e4f55b78d8b30afb257d5a1b16b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9c7cbcc38b28d45c8539710e5b260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3702b5620dbee356a8e560c78d223ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d70d7f59b6b1d7e2eafbf6febb51ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f3e723a13bda0c966f8bc83f3bb7a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3171b3d11c6f4619e189677345357508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e22b9bcf219e45b303787e58ec2d233.png)
您最近一年使用:0次
2023-07-16更新
|
286次组卷
|
3卷引用:四川省绵阳市涪城区2022-2023学年八年级下学期期中数学试题
解题方法
3 . 如图,在平行四边形
中,
,点E为
边上一点,连结
交对角线
于点F.
(1)如图,若
,
,求
的长度;
(2)如图,若
,点G,H为
边的两点,连接
,
,
,且满足
.求证:
.
(3)如图,若
,
,将
沿射线
方向平移,得到
,连接
,
,当
的值最小时,请直接写出
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca6a76034d7ebb3ca8813c99a25b62d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
(1)如图,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a690535ef8766d108cce93b9e8544311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad43919c3004ef18222ed58279a7bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/17/fca88c0f-d21f-4aa5-b0ef-4778761e7ff7.png?resizew=194)
(2)如图,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0188b06b514e41f298449ede057e2062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935ad59079c158ea0f92018fc548e4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3864197879d33d10f16a6429b0227c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999a995a6d07c561ce64e8952994160a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6afcfb000584411f3841d83574d4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876f76e63e17aa6196bbabc87aeee4e2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/17/80e16b9e-d709-4607-a914-11c9711f123b.png?resizew=277)
(3)如图,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a690535ef8766d108cce93b9e8544311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454328a8e75953fdb0835ce80d9566e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca13a715cae753737d1be851c132b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c3f982d999937891eec4cb22d62e5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a06d1b136f0ccaed03737e83e4c915c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ba89e83329983cfadbfcdda151aaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcbc4e870ecb362eab00ae9dc0bd9af2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcbc4e870ecb362eab00ae9dc0bd9af2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/17/9ec5d73a-02ec-4722-b8c1-39c3d17f90c7.png?resizew=185)
您最近一年使用:0次
4 . 如图,已知正方形
的边长为a,点
是
边上一动点,连接
,将
绕点
顺时针旋转
到
,连接
,
,则当
之和取最小值时,
的周长为______ .(用含a的代数式表示)
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.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/75d51c049129834e2964334275194fa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13668f033d00acfc366f7e47949c4462.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/27/d5e02c90-b2bc-434c-9d32-9b53a9778b35.png?resizew=171)
您最近一年使用:0次
2023-06-22更新
|
158次组卷
|
2卷引用:山东省青岛市莱西市2023-2024学年八年级上学期期末数学试题
5 . 如图①.已知
是等腰直角三角形,
,点D是
的中点,作正方形
,使点
,
分别在
和
上,连接
,
.
和
的数量关系,并证明你得到的结论;
(2)将正方形
绕点D逆时针方向旋转一定角度后(旋转角度大于
,小于或等于
),如图②,通过观察或测量等方法判断(1)中的结论是否仍然成立?如果成立,请予以证明;如果不成立,请说明理由;
(3)若
,在(2)的旋转过程中,
①当
为最大值时,则
___________.
②当
为最小值时,则
___________.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(2)将正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d495d88b8e51f89e2e4da27328025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b2ccc34a8b3cf908af78bdbe804afac.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4684129b59854b3cd69312c828aeb7da.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5f441402ee632377b6bedeb060f3d9.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5f441402ee632377b6bedeb060f3d9.png)
您最近一年使用:0次
6 . 如图1,将矩形
放置于第一象限,使其顶点O位于原点,且点B,C分别位于x轴,y轴上.若
满足
.
(2)取
中点M,连接
,
与
关于
所在直线对称,连接
并延长,交x轴于点P.
①求
的长;
②如图2,点D位于线段
上,且
.点E为平面内一动点,满足
,连接
.请你求出线段
长度的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ca6d348c4c0f53eb995246e1cb5ae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2de78b3148620cc740e52edb9a791c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/401467318f71d611232b36c867db6905.png)
(2)取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4cfef623a9534b5708df5f95f1760a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3cf64da73d991ecb77a7aef5ca9c053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9eace64a7b30fad3f34e660eaeb1efb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4cfef623a9534b5708df5f95f1760a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
②如图2,点D位于线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f75e575cbfaea176d9fc9a019c0426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a04081cb23be32fd60e70f5054652531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
您最近一年使用:0次
2023-05-04更新
|
345次组卷
|
4卷引用:福建省厦门市同安区2022-2023学年八年级下学期期中质量检测数学试题
福建省厦门市同安区2022-2023学年八年级下学期期中质量检测数学试题(已下线)考题猜想02 中心对称图形-平行四边形(进阶必刷36题9种题型)-2023-2024学年八年级数学下学期期中考点大串讲(苏科版)福建省莆田市涵江区莆田锦江中学2023-2024学年八年级下学期期中数学试题2023年浙江省杭州市西湖区中考数学第二次模拟试题
名校
7 . 如图,正方形中,点P是线段
上的动点.
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a92bf37efe386e969621baf38d1eb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
①如图1,求证:.
②如图2,连接交
于点O,交
于点F,试探究线段
、
、
之间用等号连接的数量关系,并说明理由;
(2)如图3,已知M为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32bb906128c31953a48f421869d24ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2fdf1944afebb51cb6a5e6c74aadd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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2023-04-27更新
|
629次组卷
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2卷引用:广东省广州市第二中学2022~2023学年八年级下学期期中考试数学试卷
名校
8 . 平行四边形
中,点E在边
上,连
,点F在线段
上,连
,连
.
,点E为
中点,
.若
,求
的长度;
(2)如图2,已知
,将射线
沿
翻折交
于H,过点C作
交
于点G.若
,求证:
;
(3)如图3,已知
,若
,直接写出
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb91cb9a5a14169845d700fbd95890ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963b642016122e89cd23cf7b06b6856a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(2)如图2,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc0b3b9279de39c2c27f50dc6500eff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a4b46c42eabe12093c6e193b52ef1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27e47690ed332c573186992b6d25654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6925b5356dc8db0f204a09a3352d35f.png)
(3)如图3,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181e38066f00256158cc9e8fafb2263e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd41e2eb04d2b467c0d276ab2a04c55.png)
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2023-04-13更新
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1243次组卷
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12卷引用:重庆市育才中学校2023-2024学年八年级下学期第二次自主作业数学试题
重庆市育才中学校2023-2024学年八年级下学期第二次自主作业数学试题2023年广东省深圳市南山区中考二模数学试卷(已下线)2023年广东省深圳市南山区中考二模数学试卷变式题16-22题2023年广东省广州市越秀区名德实验学校中考模拟数学试题2023年广东省广州市增城区英华学校中考一模数学试题2023年广东省广州市番禺区天星学校中考二模数学试题(已下线)2023年广州等市二模(几何综合)(已下线)2023年广州等市一模(几何综合)(已下线)2023年深圳东莞二模(几何综合)四川省成都市成都教科院附属龙泉学校2023-2024学年九年级上学期10月月考数学试题重庆市第十八中学2023-2024学年 九年级下学期第一次月考数学试题(已下线)中考难点03 几何证明压轴题(2题型+满分技巧+限时检测)-2024年中考数学【热点·重点·难点】专练(重庆专用)
9 . 如图,正方形
中,
,E是边
的中点,F是正方形
内一动点,且
,连接
,
,
,并将
绕点D逆时针旋转
得到
(点M,N分别为点E,F的对应点).连接
,则线段
长度的最小值为_____________ .
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1496042c1d721cffd25053e997a9a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999c42a021bdc576f097246b9e64d986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://img.xkw.com/dksih/QBM/2023/2/20/3178840372330496/3179336190017536/STEM/20c3dfa67b0b462cb0586b9e14949b2c.png?resizew=299)
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2023-02-21更新
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1058次组卷
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5卷引用:专题9.51 矩形、菱形、正方形(最值问题)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(苏科版)
(已下线)专题9.51 矩形、菱形、正方形(最值问题)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(苏科版)(已下线)专题18.47 矩形、菱形、正方形(最值问题)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(人教版)(已下线)9.4 矩形、菱形、正方形-2022-2023学年八年级数学下册《考点·题型·技巧》精讲与精练高分突破系列(苏科版)(已下线)专题5.22 矩形、菱形、正方形(最值问题)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(浙教版)湖北省襄阳市南漳县2022-2023学年九年级上学期期末学生学业质量监测数学试题
10 . 如图,在长方形ABCD中,
,
,点P为边AB上的一个动点,过点P作
,分别交BD、CD于点E、Q,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feda722a8a8f4b6a84d9ea614e4e8de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dbdf8648ebbc56720ec14fd91159906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fe5fb32d05389601d8c53df7baaec6a.png)
![](https://img.xkw.com/dksih/QBM/2022/7/5/3016039281786880/3054854527279104/STEM/9a3a5b07bff74cd796033139459b19e5.png?resizew=143)
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