名校
1 . 如图,在正方形网格中,点A、B、C都在格点上,(要求仅用无刻度的直尺,不要求写画法,保留必要的作图痕迹)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/0226a3fb-cbd9-4c87-a748-a09038373fc7.png?resizew=363)
(1)在图1中,以C为位似中心,位似比为
;请画出放大后的
.
(2)在图2中,线段
上作点M,利用格点作图使得
.
(3)在图3中,利用格点在
边上作-个点D,使得
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/0226a3fb-cbd9-4c87-a748-a09038373fc7.png?resizew=363)
(1)在图1中,以C为位似中心,位似比为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)在图2中,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3919b305d29ee107cee963a6c75aac.png)
(3)在图3中,利用格点在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ee8c0f94483e7502d8b7b97c43e2e8.png)
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|
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10卷引用:广东省深圳市南山区2022-2023学年九年级上学期期末考试数学试卷
广东省深圳市南山区2022-2023学年九年级上学期期末考试数学试卷广东省深圳市深圳实验学校初中部2023-2024学年九年级上学期月考数学试题广东省深圳市南山外国语学校(集团)高新中学2023-2024学年九年级上学期期中模拟数学试题广东省深圳市四校2023-2024学年九年级上学期期中联考数学试题(已下线)第07讲 图形的位似(9类题型)-【帮课堂】2023-2024学年九年级数学上册同步学与练(浙教版)(已下线)期末模拟测试卷02-2023-2024学年九年级数学上学期期末考点大串讲(北师大版)江苏省扬州市江都区江都区第三中学2023-2024学年九年级上学期10月月考数学试题(已下线)专题04 图形的位似(四大类型)(题型专练)-2023-2024学年九年级数学下册《知识解读·题型专练》(人教版)(已下线)第04讲 图形的位似(知识解读+真题演练+课后巩固)-2023-2024学年九年级数学下册《知识解读·题型专练》(苏科版)河南省驻马店市驿城区第四中学2023-2024学年九年级上学期1月月考数学试题
2 . 如图,点
是矩形
的对角线
的中点,
交
于点
,若
,
,则
的长为 ____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/1a32d879bf4fecdd2c73ed792d77f4b0.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/7d958f5219b501284e1554d9a8aec3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9466d03bc916a9169eaf39863d59fceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/2/348d1fb2-5a58-4a80-89e4-b8c8d27dfe5e.png?resizew=172)
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5卷引用:广东省佛山市南海外国语学校2022-2023学年九年级上学期第一次大测数学试卷
广东省佛山市南海外国语学校2022-2023学年九年级上学期第一次大测数学试卷云南省曲靖市麒麟区2021-2022学年八年级下学期期末数学试题天津市津南区南部学区2022-2023学年八年级下学期期中数学试题(已下线)专题4.9 平行线分线段成比例(分层练习)-2023-2024学年九年级数学上册基础知识专项突破讲与练(北师大版)(已下线)专题11平行线分线段成比例(2个知识点2种题型1种中考考法)-【帮课堂】2023-2024学年九年级数学上册同步学与练(北师大版)
3 . 下列说法错误的是( )
A.两条直线被一组平行线所截,所得对应线段成比例 | B.矩形的对角线平分一组对角 |
C.顺次连接矩形各边的中点所得四边形是菱形 | D.有一角是直角的菱形是正方形 |
您最近一年使用:0次
2023-03-20更新
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2卷引用:广东省深圳市光明区公明中英文学校2022-2023学年九年级上学期11月期中数学试题
4 . 如图,
的半径为2,将
的直径
绕点B顺时针旋转
得到线段
,
与
交于点F,过点C作
于点D,连接
.
当
时,
的长度为________ ;
当
时,
的长度为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603d15d9432b7722877119ef499f3a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047367808256e193a9e04e66d230c62a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1625e1079d53147151aa54c5c51a1ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/536350e2-b1cf-4de6-9de7-13d758c22be8.png?resizew=144)
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5 . 如图,
,
,则下列比例式中不正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/610f2aad-6095-4986-b3e4-5848ac5988e5.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25eff69a4a0dc7a7ab183843303d333.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/610f2aad-6095-4986-b3e4-5848ac5988e5.png?resizew=160)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 如图1,点G在正方形
的对角线
上,
于E,
于F.
①求证:四边形
是正方形;
②推断:
___________;
(2)探究与证明:
将正方形
绕点C顺时针方向旋转
角(
),如图2,试探究线段
与
之间的数量关系,并说明理由;
(3)拓展与运用:
正方形
在旋转过程中,当B、E、F三点在一条直线上时,如图3,延长
交
于点H,若
,
,求
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/d0ddc47cce2e80eefc150192061c3b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7fe55d17f5ca49389dd2cb1ab74ac2b.png)
①求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920ae90193d50ae60beafae6f2b4ebcd.png)
②推断:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2367bb0d178d899c659757872c086a4e.png)
(2)探究与证明:
将正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920ae90193d50ae60beafae6f2b4ebcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f6406b4f25d9175b1a1bd9c739cb740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(3)拓展与运用:
正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920ae90193d50ae60beafae6f2b4ebcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3da257beb296514b57a1e3169b099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d5161a60846b450881b5104b177a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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2022-12-13更新
|
122次组卷
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3卷引用:广东省梅州市东山学校2021-2022学年九年级上学期数学期末考试试卷
名校
7 . 如图,在平面直角坐标系中,直线
与
轴,
轴分别交于A,
,与反比例函数
在第一象限的图象交于点
,
,过点
作
于
,过点
作
于
,直线
与
交于点
,若
,则
与
的面积之比是 ( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/e5c239c4-878f-4cbf-9a40-d020e10d172b.png?resizew=171)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a8b6fe6b9add4a965ac32c1fc51c6b.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ee6c0cd4ecde22038ddb7b0543c3f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36fae6d596bbc570bab8dff17518b6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1460aa3d83df61f6c411b34412135451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4326c891c6c2234c754e24be1d098d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc869125145c0139d92490a41bd3918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/e5c239c4-878f-4cbf-9a40-d020e10d172b.png?resizew=171)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-12-12更新
|
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8卷引用:广东省梅州市丰顺县大同中学2022-2023学年九年级上学期12月月考数学试卷
广东省梅州市丰顺县大同中学2022-2023学年九年级上学期12月月考数学试卷广西壮族自治区北海市2019-2020学年九年级上学期期末数学试题(已下线)山东省枣庄市第二十九中学2020-2021学年九年级上学期期末考模拟数学试题(1)河北省保定市第十七中学2020-2021学年九年级上学期12月月考数学试题河北省保定市第十七中学2020-2021学年九年级上学期11月月考数学试题(已下线)山东省济南市高新区2022-2023学年九年级上学期期末数学试题变式题6-10(已下线)2023年四川省宜宾市中考数学真题变式题7-12题广西壮族自治区来宾市2023-2024学年九年级上学期期末数学试题
8 . 如图,锐角
中,
是高,
,
分别是
,
中点,
交
于
,已知
,
,
的周长为
,则
的周长为( )
![](https://img.xkw.com/dksih/QBM/2022/11/29/3120295518117888/3125912269807616/STEM/7417e3483e3a46b3bf2ce7deae59d8e8.png?resizew=218)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/a0ed1ec316bc54c37c4286c208f55667.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f358cc1c7ab5db661d488bbcefb491f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d480e8b2c516612b47a19cb62d9bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2022/11/29/3120295518117888/3125912269807616/STEM/7417e3483e3a46b3bf2ce7deae59d8e8.png?resizew=218)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
9 . 如图,已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30e89a107ed897168f5cc77bece174b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c75d8581bb7b2a91795852acdc07d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a0be6a2261f0ed76269d41991c32e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30e89a107ed897168f5cc77bece174b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/fa8dd11a-b4ef-4950-befe-d574436ed31d.png?resizew=152)
您最近一年使用:0次
2022-11-26更新
|
397次组卷
|
2卷引用: 广东省深圳市红岭教育集团2022-2023学年九年级上学期期中数学试卷
名校
10 . 直线
与反比例函数
图象交于A,B两点,C是第一象限内的反比例函数图象上A点右侧任意一点;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/968d1b05-b202-4065-9d90-fe66ebb14810.png?resizew=704)
(1)如图1,求A,B两点坐标;
(2)如图2,连接
,若
,求点C的坐标;
(3)如图3,设直线
分别与x轴相交于D,E两点,且
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef854dfcbba9b7dedc1bc52f6332b011.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/968d1b05-b202-4065-9d90-fe66ebb14810.png?resizew=704)
(1)如图1,求A,B两点坐标;
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c284ccb6f4ee7a8690013d2ce16e226.png)
(3)如图3,设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a6d50515fc65885d44cd6a3c41e6a7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c184417e5c490bdc5891cf901001d5ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445306cbf9c02f077eae461e709a7cda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64da75a02173c2a5eb40f4c68d0f4f36.png)
您最近一年使用:0次
2022-11-09更新
|
434次组卷
|
2卷引用:广东省深圳市南实集团麒麟中学2022-2023学年九年级上学期期中考试数学试卷