1 . 如图,
与
关于点G中心对称,若点E,F分别在
上,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48cec75659b1d551802d0b41d2fa3db5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e04521727594e71dcccd976cac40e5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920a4de36161eb93e07e7e8522db0df4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03687d97d61b4a7cecbb73f2a6604212.png)
您最近一年使用:0次
2024-03-07更新
|
148次组卷
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7卷引用:福建省福州第四中学桔园洲中学2022-2023学年九年级上学期第四次适应性练习数学试卷
福建省福州第四中学桔园洲中学2022-2023学年九年级上学期第四次适应性练习数学试卷(已下线)第23章 旋转(单元测试·基础卷)-2023-2024学年九年级数学上册基础知识专项突破讲与练(人教版)(已下线)第03讲 中心对称与中心对称图形(知识解读+达标检测)-2023-2024学年八年级数学下册《知识解读·题型专练》(北师大版)(已下线)专题9.6 中心对称与中心对称图形(分层练习)-2023-2024学年八年级数学下册基础知识专项突破讲与练(苏科版)(已下线)第3章 图形的平移与旋转(单元测试·基础卷)-2023-2024学年八年级数学下册基础知识专项突破讲与练(北师大版)(已下线)专题3.13 图形的平移与旋转(全章知识梳理与考点分类讲解)-2023-2024学年八年级数学下册基础知识专项突破讲与练(北师大版)(已下线)八年级数学期末必刷题01(易错题,80题35种题型)-2023-2024学年八年级数学下学期期末考点大串讲(苏科版)
2 . 如右图,
和
都是等边三角形,
,F为
中点,若点D在直线
上运动,连接
,则在D点运动过程中,线段
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/68570781-3919-48a6-b29f-c7a0136b8e0e.png?resizew=152)
您最近一年使用:0次
3 . 如图
,在正方形
中,
、
分别为边
、
的中点,连接
、
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/96a16e84-9f64-4374-817e-c8e6b3b13e4e.png?resizew=323)
(1)求证:
;
(2)如图
,连接
,
,
交
于点
.
①求证:
;
②若
,求三角形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](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/a0ed1ec316bc54c37c4286c208f55667.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/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/96a16e84-9f64-4374-817e-c8e6b3b13e4e.png?resizew=323)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876bb8ce0ca53475fa091ffd18bdc94a.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b30434675c7443e86f407aa8afb1fb.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cd0b0bda79a950fe6f44fc6d62740f1.png)
您最近一年使用:0次
名校
4 . 如图,
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f805768a5ffaf8bdfa4bc3b680aafdc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439fbb8974a5f907205d26b47b420bf4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/25/5603db18-8cb9-4b07-bf18-62c4523e752c.png?resizew=142)
您最近一年使用:0次
2024-02-25更新
|
81次组卷
|
8卷引用:2022年福建省厦门市湖里区福建省厦门双十中学初中毕业年级第二次模拟数学试题
5 . 如图,
与
都是等腰直角三角形,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f068501bd11535ddbb0f46acc2a0559.png)
,
绕着点
旋转.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/421d03b4-da4b-47bc-b535-6779a4065bbd.png?resizew=332)
(1)如图1,求证:
;
(2)如图2,当点
,
,
在同一直线上,且点
在
内部时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe59deb5eff9123704c5505830b597e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6278e12b0d3ab7e184e0b4147888a1e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c999cc4d1cdb9f6aa08e1bdb4f462972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f068501bd11535ddbb0f46acc2a0559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe59deb5eff9123704c5505830b597e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/421d03b4-da4b-47bc-b535-6779a4065bbd.png?resizew=332)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21931f9252ef7e731b7fba5afc0978ac.png)
(2)如图2,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
您最近一年使用:0次
6 . 如图,
.
.
(2)判断
的形状,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caec300bdde9f9b846548eccbadaaf94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc6cfc2eafb07d6f690da4d5ca5a754.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f409b28f7cb97726646e79709ad25190.png)
您最近一年使用:0次
2024-02-15更新
|
300次组卷
|
2卷引用:2024年福建省部分学校教学联盟中考二模数学试题
7 . 如图,在正方形
中,
,点F是
边上一点,点E是
延长线上一点,
,
.连接
、
、
,
与对角线
相交于点G,则线段
的长是( )
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c581dab991aeadf06d972e47673ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b490c01e3288ff5d22ff497d495fee0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-02-05更新
|
1055次组卷
|
8卷引用:2024年福建省部分学校教学联盟中考二模数学试题
2024年福建省部分学校教学联盟中考二模数学试题重庆市铜梁区2023-2024学年九年级上学期期末数学试题重庆市铜梁区2023-2024学年九年级上学期期末数学试题重庆市开州区开州文峰教育集团2023-2024学年九年级下学期3月月考数学试题福建省福州市平潭县平潭一中教研片2023-2024学年八年级下学期期中数学试题(已下线)第05讲 正方形(3个知识点+5类热点题型讲练+习题巩固)-【帮课堂】2023-2024学年八年级数学下册同步学与练(人教版)山西省朔州市右玉县右玉教育集团2023-2024学年八年级下学期期中数学试题辽宁省葫芦岛市连山区2023-2024学年八年级下学期期中数学试题
8 . 如图,在中,
,
,分别以
,
为边向外作正方形
和正方形
,连接
,当
取最大值时,
的长是( )
A.4 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-30更新
|
155次组卷
|
2卷引用:福建省漳州市2023-2024学年九年级上学期期末(北师大版B卷)数学试题
9 . 如图,已知菱形
,
,将线段
绕点B逆时针旋转
(
)得到线段
,作
的角平分线
交
于点P,连接
并延长交
于点F,连接
,
.
(1)如图1,当
,即点D与点E重合时,求证:
是等边三角形;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/941e2c69-a1e5-4b6c-954a-abbbb30f8c68.png?resizew=166)
(2)如图2,当
时,求证:
;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/9b61f8d2-8bce-443a-ae69-984af2c19219.png?resizew=150)
(3)在线段
的旋转过程中,直接写出线段
,
,
之间的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f7af3d474e4aac4e11ba50ad66e727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bae8d061130767b71ab3885084565f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79cd9d0d73549e2944578f3513631ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.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/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d506cde7e074adc6d8be3c2b11e47482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/941e2c69-a1e5-4b6c-954a-abbbb30f8c68.png?resizew=166)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3508375662b73c746ed51f917fe99448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f40b3bf6b27f936e0747de92151a1f77.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/9b61f8d2-8bce-443a-ae69-984af2c19219.png?resizew=150)
(3)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a477603f3f88c3b48352b6130f9ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2319a01218514917e446dfc807a625ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
您最近一年使用:0次
名校
10 . 已知:如图,在矩形
中,
是
的中点,求证:
.
![](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/0487ebca22d4aa1233073f81fd70a424.png)
您最近一年使用:0次
2024-01-20更新
|
300次组卷
|
9卷引用:2023年福建省厦门市集美区中考模拟数学试题