1 . 如图,在直角坐标系中,矩形
的边
在
轴上,边
在
轴上,点
的坐标为
,将矩形沿对角线
翻折,
点落在
点的位置,且
交
轴于点
,那么点
的坐标为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/3be97734-bc4d-41d7-844a-f4e6231fe755.png?resizew=153)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607543bb9f55b8a141ed2d6cf0e1a20b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.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/c2e88ebfb5c0d6cce558b515be06404d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/3be97734-bc4d-41d7-844a-f4e6231fe755.png?resizew=153)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:贵州省六盘水市盘州第一中学2022-2023学年九年级下学期5月月考数学试题
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2 . 如图,
是
的直径,
垂直于弦
于点E,且交
于点D,F是
延长线上一点,若
.
是
的一条切线;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4abf2001b3aaf7d0a5b0413b2d3ce0e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd90bfa2987b84df430498021d5f648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65fc998d33cdf37c272f79cfd64b7b99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
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3卷引用:贵州省铜仁市石阡县2023-2024学年九年级下学期3月月考数学试题
3 . 如图,已知抛物线
经过两点
,
,C是抛物线与y轴的交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/619b8414-d035-4d59-9685-41dd9181e921.png?resizew=88)
(1)求抛物线的解析式;
(2)点N在y轴正半轴上运动,是否存在点N使得
与
相似,如果存在,请求出点N的坐标;
(3)点P的横坐标为m,且在平面直角坐标系第一象限内的抛物线上运动,设△PBC的面积为S,求S关于m的函数表达式和S的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2588ccdfad869009db135f4d2da6e8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbdef5d0c05acbf63fa72fa85c5bb45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/619b8414-d035-4d59-9685-41dd9181e921.png?resizew=88)
(1)求抛物线的解析式;
(2)点N在y轴正半轴上运动,是否存在点N使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40bd8b071b24e92e0b1fd38101ffe400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
(3)点P的横坐标为m,且在平面直角坐标系第一象限内的抛物线上运动,设△PBC的面积为S,求S关于m的函数表达式和S的最大值.
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3卷引用:贵州省铜仁市玉屏侗族自治县2022-2023学年九年级上学期第二次月考数学试题
4 . 已知:如图,在菱形
中,E为
边上一点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/dc61e60f-01f8-42af-8f7d-d23d33409318.png?resizew=184)
(1)求证:
;
(2)若
,求
的值.
![](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/e4baf0b54fd60440816067e12e5c840a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/dc61e60f-01f8-42af-8f7d-d23d33409318.png?resizew=184)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e15fb0416a74b4cb01e7af2990e698.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc9a0a56ce73fd2addad6ad7ca1594e.png)
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5 . 如图,在
中,
,
,
为
边上的高.动点
从点
出发,沿
方向以
的速度向点
运动.设
的面积为
,矩形
的面积为
,运动时间为t秒
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
__________ 秒时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec9be0ba0535500e0de173c44fd812c.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f951a536cc785994e26d39407d20c0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592053410fe89d92c3771ed67bf3aff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce48b570739cb56d282a840934f8c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94ec9d833355c504971b4de64505cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/371a0f40eaadc08443e3ac0a9cd86196.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/dfc71fb9-3d00-4a10-be1f-ba10949d87b6.png?resizew=180)
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6 . 如图,在
中,
,
,
,D、E分别是边
、
上的两个动点,且
,P是
的中点,连接
,
,则
的最小值为 __ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d2eae98e1683fbb9533584450dd696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a19338598965bb3856cdd0236bbf694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fdad3a4a5c6d83e9879d1a9e40bfd7e.png)
![](https://img.xkw.com/dksih/QBM/2022/12/13/3130003860676608/3142278101614592/STEM/a8873d724ad94131bcfe7f0d0208764a.png?resizew=103)
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8卷引用:贵州省黔南布依族苗族自治州长顺县2021-2022学年九年级下学期11月月考数学试题
贵州省黔南布依族苗族自治州长顺县2021-2022学年九年级下学期11月月考数学试题江苏省南京市玄武区2019~2020学年九年级上学期期末数学试题江苏省南京市玄武区2019-2020学年九年级上学期期末数学试题(已下线)专题20 和阿波罗尼氏圆有关的最值问题-【微专题】2022-2023学年九年级数学上册常考点微专题提分精练(浙教版)(已下线)重难点06 六种几何综合模型 -2022-2023学年九年级数学考试满分全攻略(人教版)(已下线)专题18 阿氏圆小题-【微专题】2022-2023学年九年级数学下册常考点微专题提分精练(人教版)(已下线)专题18 阿氏圆小题-【微专题】2022-2023学年九年级数学下册常考点微专题提分精练(苏科版)陕西省西安市铁一中学2023-2024学年九年级上学期开学考试数学试题
名校
7 . 如图,在
中,点D,E分别是
上的点,且
,若
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/ed2e3455-2f0c-40ba-b803-7278049a342c.png?resizew=132)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94768c4b076fabb1ef1d5c318f019e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105068b25f5a63af32f4082cfe08691e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c260ea3880438a9a7ecbac103a366b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0fcfcbe43da94485843b778f0978dce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/ed2e3455-2f0c-40ba-b803-7278049a342c.png?resizew=132)
A.1:1 6 | B.1∶18 | C.1:20 | D.1:24 |
您最近一年使用:0次
2022-12-15更新
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25卷引用:贵州省黔东南苗族侗族自治州从江县停洞中学2023-2024学年九年级下学期2月月考数学试题
贵州省黔东南苗族侗族自治州从江县停洞中学2023-2024学年九年级下学期2月月考数学试题江苏省扬州市江都区宜陵镇中学2016-2017学年八年级下学期第二次月考数学试题浙教版九年级全册数学综合测试题辽宁省大连市瓦房店市2021-2022学年九年级上学期第一次月考数学试题山东省泰安市泰山外国语学校(五四制)2022-2023学年八年级下学期5月月考数学试题山东省济南市市中区济南育英中学2023-2024学年九年级上学期10月月考数学试题2015届河北省沙河市二十冶第三中学九年级上学期第二次模拟数学试卷2015年人教版初中数学九年级27本章检测卷12015年人教版初中数学九年级27.2.2练习卷2内蒙古开来中学2019届九年级上学期期末考试数学试卷北师大版九年级上册数学第四章单元测试卷人教版九年级数学下册27.2 相似三角形【区级联考】山东省济南市槐荫区2019届九年级下学期第一次模拟考试数学试题沪教版(上海)九年级上学期24.5第3课时 相似三角形的性质(3)河南省驻马店市上蔡县2019-2020学年九年级上学期期中数学试题(已下线)【万唯原创】2015年陕西省-试题研究正文-第一部分 第四章8安徽省滁州市全椒县2021-2022学年九年级上学期期中数学试题浙江省金华市义乌市春晗学校2021-2022学年九年级上学期期中数学试题安徽省滁州市凤阳县2021-2022学年九年级上学期期末数学试题四川省遂宁市射洪市射洪中学校2022年九年级上学期期中数学试题(已下线)第二十七章 相似(章末测试)-2022-2023学年九年级数学下册同步精品课堂(人教版)山东省日照市2022-2023学年九年级上学期期末数学试题(已下线)黄金卷1-【赢在中考·黄金8卷】备战2023年中考数学全真模拟卷(大连专用)第二十五章 图形的相似 25.5 相似三角形的性质冀教版九年级上册课前预习四川省遂宁市射洪市射洪中学校2023-2024学年九年级上学期期中数学试题
8 . 如图,在正方形
中,
,
分别为
和
上的点,
与
交于点
,
.
![](https://img.xkw.com/dksih/QBM/2022/11/23/3115566914502656/3125604523892736/STEM/cef6155cf08e4ffcba6744e3bb84f852.png?resizew=130)
(1)求证:
;
(2)若正方形
的边长为4,
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e83725830eb034201c1c9641bef22e2.png)
![](https://img.xkw.com/dksih/QBM/2022/11/23/3115566914502656/3125604523892736/STEM/cef6155cf08e4ffcba6744e3bb84f852.png?resizew=130)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c926db31ac6ef8252c189e934787113c.png)
(2)若正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e713f0ba80e87438cf6273fb00cb81a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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9 . 如图,以点O为位似中心,将
放大得到
.若
,则
与
的面积之比为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73de7500e95120ca26f0e579bf80032c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e15186cf03e17275602581a1da03fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373d9c49b410ba29f97b1497a4eee63d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-11-28更新
|
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5卷引用:贵州省黔东南苗族侗族自治州从江县停洞中学2023-2024学年九年级下学期2月月考数学试题
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10 . 如图,一次函数
的图像与反比例函数
的图像交于点
、
两点,与
轴、
轴分别交于
、
两点,且点
的坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/16797503-9022-47ce-abda-e69467e89797.png?resizew=284)
(1)求一次函数和反比例函数的表达式.
(2)求
的面积.
(3)点
为反比例函数图象上的一个动点,
于
,是否存在以
、
、
为顶点的三角形与
相似,若存在,直接写出
点的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/836b419464e4734e99af06c2fb104716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990eaf5dbba84f199bdc438da81fcfa6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/16797503-9022-47ce-abda-e69467e89797.png?resizew=284)
(1)求一次函数和反比例函数的表达式.
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00a815bbb597702c286eb5006cae456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a9a6eeeebf3cff569578d7366b755aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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