真题
名校
1 . 如图,圆内接四边形
中,
,连接
,
,
,
,
.则
的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b5832f56c531db62bf8f49702bf30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8c62f72dce65bb535b38cff7b84c3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76bc8e50eeccced1d7f3bc52e09a7d03.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-06-29更新
|
1489次组卷
|
15卷引用:辽宁省抚顺市新宾满族自治县2023-2024学年九年级上学期期末数学试题
辽宁省抚顺市新宾满族自治县2023-2024学年九年级上学期期末数学试题2024年辽宁省抚顺市顺城区中考一模数学试题2023年内蒙古赤峰市中考数学真题(已下线)专题27圆的有关性质(优选真题60道)-学易金卷:三年(2021-2023)中考数学真题分项汇编【全国通用】(已下线)专题2.17 圆周角(直通中考)(基础练)-2023-2024学年九年级数学上册基础知识专项突破讲与练(苏科版)(已下线)专题03 与圆有关的角和圆内接四边形(题型专练)-2023-2024学年九年级数学上册《知识解读·题型专练》(人教版)(已下线)专题24.13 圆周角(直通中考)(基础练)-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06讲 圆内接四边形(3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)专题03 与圆有关的角和圆内接四边形(题型训练)-2023-2024学年九年级数学下册《知识解读·题型专练》(北师大版)【43311395】6.1 圆的有关概念与性质-【智乐星中考·中考备战】2024年山东省中考数学精练本(已下线)重难点04+圆的基本性质及直线与圆的位置关系(11大题型+满分技巧+限时分层检测)1(已下线)重难点07+圆中的计算及其综合1(4考点7题型)2024年山东省枣庄市初中学业水平考试数学模拟试题(二)2024年甘肃省金昌市金川区双湾中学联片教研中考三模数学试题2024年福建省厦门市湖里区五缘实验学校中考二模数学试题
真题
名校
2 . 如图,在四边形
中,
,以
为腰作等腰直角三角形
,顶点
恰好落在
边上,若
,则
的长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8be9eee90517daed77873cbaedcff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ba3f676fda6a2aaaa55c9f32874a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
A.![]() | B.![]() | C.2 | D.1 |
您最近一年使用:0次
2023-06-15更新
|
1966次组卷
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13卷引用:辽宁省/鞍山市千山区初中阶段性教学成果评估九年级数学试卷题
辽宁省/鞍山市千山区初中阶段性教学成果评估九年级数学试卷题2024中考辽宁省鞍山市千山区一模考前数学模拟预测题2023年浙江省丽水市中考数学真题(已下线)专题09 几何图形初步与三角形相关计算(47题)-学易金卷:2023年中考数学真题分项汇编(全国通用)(已下线)专题11 三角形-学易金卷:三年(2021-2023)中考数学真题分项汇编(浙江专用)(已下线)专题13 多边形与平行四边形-学易金卷:三年(2021-2023)中考数学真题分项汇编(浙江专用)(已下线)2023年浙江省丽水市中考数学真题变式题6-10题2023年广东省广州市部分学校中考一模数学试题2024年山东省威海市经济技术开发区皇冠中学中考一模数学模拟试题(已下线)专题15 特殊三角形(考点回归+练透中考13类核心重点考向)-备战2024年中考数学真题题源解密(全国通用)(已下线)热点06++全等三角形与特殊三角形1(已下线)重难点04 圆的压轴类型归纳(8大题型+满分技巧+限时分层检测)-2024年中考数学【热点·重点·难点】专练(广东专用)(已下线)专题05 圆的证明与计算(隐圆模型,与圆有关的相似、全等和计算等问题)-2024年中考数学二轮热点题型归纳与变式演练(全国通用)
3 . 如图1,矩形和矩形
共顶点,且绕着点
顺时针旋转,满足
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ffa85c34fdc3f25143ec84888ff2d25.png)
(2)如图2,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0decd4311730d690c18b2639265c785b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8305e23d5378f1cbf5518256a37c9e.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/299c3ba1d54a0e7a49072d9f5d5a7ea1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4599d587a30acc1669c48abb0e5c236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2023-02-21更新
|
170次组卷
|
4卷引用:2023年辽宁省 丹东市第六中学中考数学二模模拟试题
名校
4 . 如图①,在
中,
,
是
外接圆
上一点,连接
,过点
作
,交
的延长线于点
,交
于点
.
![](https://img.xkw.com/dksih/QBM/2022/4/27/2974284817227776/2979799907483648/STEM/24c40b25-8412-42cf-b43d-240f932ab76a.png?resizew=484)
(1)求证:四边形
是平行四边形;
(2)如图②,若
为
直径,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41f2f95d643629321deb6e905c4f1ed.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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2974284817227776/2979799907483648/STEM/24c40b25-8412-42cf-b43d-240f932ab76a.png?resizew=484)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec07464a1b5bc7a2cc338b1a13e0f4a6.png)
(2)如图②,若
![](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/16e0c5cb53fd85b7a23f0580df6bb49a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4280be91682e5d8a0d0704190319bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
2022-05-15更新
|
1430次组卷
|
7卷引用:辽宁省众校联盟2024年初中毕业升学内部检测一模数学丙模拟试题
解题方法
5 . 在正方形
中,点
是射线
上一点,点
是正方形
外角平分线
上一点,且
,连接
,
.
![](https://img.xkw.com/dksih/QBM/2021/7/8/2759854641463296/2772500298055680/STEM/3af93576-0bb8-420c-92b4-710ff97c3cfd.png)
(1)如图1,当
是线段
的中点时,直接写出
与
的数量关系;
(2)当点
不是线段
的中点,其它条件不变时,请你在图2中补全图形,判断(1)中的结论是否成立,并证明你的结论;
(3)当
时,请直接写出
的度数.
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607cfabc1d421835b6b64109ad18f571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/2021/7/8/2759854641463296/2772500298055680/STEM/3af93576-0bb8-420c-92b4-710ff97c3cfd.png)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d44584fd148c9b28da7b311798bfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d29e7c4d6216690152430b09f9cf0c2.png)
您最近一年使用:0次
名校
解题方法
6 . 已知
和
中,
,
,
(其中
),连接AD、CE,点M为线段AD的中点,连接ME、MC,
绕点B顺时针旋转,探究线段ME与MC的数量关系.
![](https://img.xkw.com/dksih/QBM/2021/4/9/2695965756317696/2696254235410432/STEM/07a17fce-caf4-47a9-949f-0e2435742821.png)
![](https://img.xkw.com/dksih/QBM/2021/4/9/2695965756317696/2696254235410432/STEM/8816852a-bd91-4da3-8268-be4e390a951d.png?resizew=229)
(1)如图1,点E落在BC边上时,探究ME与MC的数量关系,并说明理由;
(2)如图2,点E落在
内部时,探究ME与MC的数量关系,并说明理由;
(3)若
,
,当A、E、D共线时,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4e05646a38e1353c92e78628e1b3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74db1f028c135803c5f56852ec330d01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c494fd123ed404f0668c799ffdec9ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40af7d3c41c84640bdd35b08ebbb2cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffbb4e6b92463a41bd9460dac6b1ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://img.xkw.com/dksih/QBM/2021/4/9/2695965756317696/2696254235410432/STEM/07a17fce-caf4-47a9-949f-0e2435742821.png)
![](https://img.xkw.com/dksih/QBM/2021/4/9/2695965756317696/2696254235410432/STEM/8816852a-bd91-4da3-8268-be4e390a951d.png?resizew=229)
(1)如图1,点E落在BC边上时,探究ME与MC的数量关系,并说明理由;
(2)如图2,点E落在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb01d2b57580731c8b807ac8cffc8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf418f91a497c580f64e79c9d5ce3200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5378a3867bf1a7386b1330aa8b36f0a7.png)
您最近一年使用:0次
2021-04-09更新
|
436次组卷
|
3卷引用:2021年辽宁省鞍山市铁东区中考一模(4月)数学试题
解题方法
7 . 如图,抛物线
与x轴交于点A,点B,与y轴交于点C,抛物线的对称轴为直线
,点C坐标为
.
![](https://img.xkw.com/dksih/QBM/2020/8/17/2529773218930688/2529805586415616/STEM/b43f7722-955d-4746-a691-d6e71a456ee4.png)
(1)求抛物线表达式;
(2)在抛物线上是否存在点P,使
,如果存在,求出点P坐标;如果不存在,请说明理由;
(3)在(2)的条件下,若点P在x轴上方,点M是直线BP上方抛物线上的一个动点,求点M到直线BP的最大距离;
(4)点G是线段AC上的动点,点H是线段BC上的动点,点Q是线段AB上的动点,三个动点都不与点
重合,连接
,得到
,直接写出
周长的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c9800e4b992044d16681e77ff6563c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f5d039905b614791172b5bf7582567.png)
![](https://img.xkw.com/dksih/QBM/2020/8/17/2529773218930688/2529805586415616/STEM/b43f7722-955d-4746-a691-d6e71a456ee4.png)
(1)求抛物线表达式;
(2)在抛物线上是否存在点P,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e11fcd0bfedc0f007912d3fcc847883.png)
(3)在(2)的条件下,若点P在x轴上方,点M是直线BP上方抛物线上的一个动点,求点M到直线BP的最大距离;
(4)点G是线段AC上的动点,点H是线段BC上的动点,点Q是线段AB上的动点,三个动点都不与点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd6d78677a025b06c35298245cd9cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c720d05edfe4388f42306a3e47cb4e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c720d05edfe4388f42306a3e47cb4e0.png)
您最近一年使用:0次
2020-08-17更新
|
2150次组卷
|
5卷引用:辽宁省朝阳市2020年中考数学试题
辽宁省朝阳市2020年中考数学试题(已下线)重难点04 最值(范围)问题-2021年中考数学【热点·重点·难点】专练(已下线)重难点07(2) 函数类综合问题-2021年中考数学【热点·重点·难点】专练(已下线)(四川成都卷)2021年中考数学第三次模拟考试黑龙江省大庆市龙凤区2020-2021学年九年级下学期第一次联考数学试题
8 . 如图,正方形ABCD中,E为AB上一点,AF⊥DE于点F,已知DF=5EF=5,过C、D、F的⊙O与边AD交于点G,则DG=( )
![](https://img.xkw.com/dksih/QBM/2020/5/11/2460459521196032/2460928902184960/STEM/f7f47a9164b0441cb00ab4314ceff8f2.png?resizew=148)
![](https://img.xkw.com/dksih/QBM/2020/5/11/2460459521196032/2460928902184960/STEM/f7f47a9164b0441cb00ab4314ceff8f2.png?resizew=148)
A.2![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 如图,在
中,
,
,点
在
延长线上,点
在
上,且
,延长
交
于点
,连接
、
.
![](https://img.xkw.com/dksih/QBM/2020/4/5/2435072055115776/2435894439550976/STEM/ac716819-d4be-422c-b4b9-73243879b5b5.png)
(1)求证:
;
(2)若
,则
__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4908fad3dc6fe1b0675c870328f043ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://img.xkw.com/dksih/QBM/2020/4/5/2435072055115776/2435894439550976/STEM/ac716819-d4be-422c-b4b9-73243879b5b5.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d96a5d40d0aea9f4398ca4d0fe9b0dd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40113c5e2b3869561c001d71e090b46e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292029a209c653d03fa8a53daf4f7d89.png)
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名校
解题方法
10 . 如图1,四边形ABCD中,∠ABC=∠ADC=90°,AD=CD.
(1)求证:BD平分∠ABC;
(2)如图2,点E、F分别在AB、BC上,连接EF,M是EF的中点,过M作EF的垂线交BD于P.求证:AE+CF=
PD;
(3)如图3,在(2)条件下,连AF,若AE=CF,∠DAF=2∠AFE=2α,AF=13,BC=12
,(BC>AB).求BD的长.
(1)求证:BD平分∠ABC;
(2)如图2,点E、F分别在AB、BC上,连接EF,M是EF的中点,过M作EF的垂线交BD于P.求证:AE+CF=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(3)如图3,在(2)条件下,连AF,若AE=CF,∠DAF=2∠AFE=2α,AF=13,BC=12
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/2020/3/29/2429921270185984/2431643953848320/STEM/a11d0763769f42568c3d129f4cfc8d4d.png?resizew=550)
您最近一年使用:0次
2020-03-31更新
|
341次组卷
|
2卷引用:辽宁省沈阳市第十七中学2018-2019学年八年级下学期期中数学试题