1 . 如图,在
中,
,过点
作
外接圆
的切线交
的垂直平分线于点
的垂直平分线交
于点
.若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78bea1b93dcf0514f157720793da1a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93af9774200946261f0ccba3e6eeba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
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2 . 如图,在
中,
,
是角平分线,
的垂直平分线分别交
、
于点E、F.若
,
,则
的长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/274cf35acb4a1748d15c39d15a9bea7b.png)
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3卷引用:2024年江苏省南京联合体中考三模数学试题
3 . 【定义】三角形的三边长分别记作
,
,
,如果
,那么就称该三角形为“准勾股三角形”.
(1)求证:等边三角形不是“准勾股三角形”;
(2)若“准勾股三角形”
是直角三角形,且
,求
的值;
(3)如图,在
中,
是
边的垂直平分线,延长
至点
,使得
,连接
.求证:
为“准勾股三角形”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fa9512c688741926dfca9c2b660a29.png)
(1)求证:等边三角形不是“准勾股三角形”;
(2)若“准勾股三角形”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)如图,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c48119b3932497634478f656c752ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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4 . 如图,已知直线1外一点P,要过点P作直线1的平行线,现有甲、乙、丙三种尺规作图方案,下面对三种方案评价正确的是( )
A.甲、乙方案正确,丙方案错误 | B.甲、丙方案正确,乙方案错误 |
C.乙、丙方案正确,甲方案错误 | D.甲、乙、丙方案都正确 |
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5 . 如图,矩形
中,O为
的中点.对角线
的垂直平分线
分别交
于点E、F,若
,则
的面积是___________ .
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c8b21a087818284c9cd909cc56c814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4c926b35bfd9d887c7d4ceab60231d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da5ec61847f0b607242437ce5be3ff7.png)
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6 . 如图,在
中,
,
,
,按以下步骤操作:①分别以O和B为圆心,以大于
的长为半径画弧,两弧分别交于点C,D;②以O为圆心,以任意长为半径画弧,分别交OA,OB于点E,F;③分别以E和F为圆心,以大于
的长为半径画弧,两弧交于点G;④作射线OG,交直线CD于点P,反比例函数
上的图像经过点P,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b352fa3e781df195ceccca90c3932a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ec371d5dbc19d236bf8a1f084031e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c1c246857ca287b626e33a66413eda7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d649afbddd907f0dfec1420f02f82fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/909a84c5f1e6ceea48418209d17c3a11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d092504d3c33c48be43f23b788efd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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名校
7 . 如图,已知点
在y轴上,点B为x轴正半轴上一动点,连接
,将线段
绕点A逆时针旋转
得到线段
, 连接
, 取
中点D, 连接
, 移动点B, 若
, 则此时点B横坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69fffda88372ae56b30b512ccee63a60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a0387fc1258f31e44a10068c0ccfd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c042ff18466e8165fadf343d142a4b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daab19a387d230fef54f07ffbcebdf6a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/16/1ef4fa42-6296-4ccf-be07-0657ead69874.png?resizew=124)
A.3 | B.5 | C.6 | D.8 |
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8 . LED感应灯是一种通过感应模块自动控制光源开关的智能照明产品.当人进入感应范围内,灯自动亮,离开感应范围,灯自动熄灭.若在感应范围内有多个感应灯,则人距离哪个感应灯更近,哪个感应灯就会亮,其他感应灯则不亮.若人到两个感应灯的距离相等,则两个感应灯都亮.
中,
,
,若在顶点B,C处分别装有感应灯,
垂直平分
,垂足为点F,交
于点E,请求出在该三角形内能使感应灯C亮的区域面积;
(2)如图2,在
中,
,
为
边上的高,在
的三个顶点处都装有感应灯,请求出在该三角形内能使感应灯B亮的区域面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99710ebed867139fb0c264caf025bdbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba59ea2234f8d0178a3281398f9b0369.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/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2卷引用:2024年广东省江门市第一实验学校中考二模数学试题
名校
9 . 如图,在
中,
,以点
为圆心,
长为半径作弧,交
于点
,再分别以
,
为圆心,以大于
的长为半径作弧,两弧交于点
,作射线
交
于点
.若
,
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/c81613520ab5a478f0b2616a9bcb79d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.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/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
A.![]() | B.![]() | C.4 | D.![]() |
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名校
10 . 如图,
中,D是
的中点,
交
于
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5f441402ee632377b6bedeb060f3d9.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408c25d856d18f72acb651e38fdbc0a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658731fe0e76e411a713af18c59bd0d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5f441402ee632377b6bedeb060f3d9.png)
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31卷引用:【新东方】 yyfbk046【wxx024】录入数学 (1)
(已下线)【新东方】 yyfbk046【wxx024】录入数学 (1)(已下线)【新东方】 fbk2070数学(已下线)【万唯原创】2019年山西数学-试题研究-选填题组特训8(已下线)数学(全国通用卷)-学易金卷:2023年中考第一次模拟考试卷2023年四川省巴中市南江县中考一模数学试题河南省淅川县大石桥乡一中2017-2018学年八年级上期末模拟数学试卷山东省济南市历下区2017-2018学年北师大版七年级第二学期期末数学试卷广东省深圳市实验学校2018-2019学年度第二学期期末七年级数学试题广东省深圳市实验学校2018-2019学年七年级第二学期期末联考数学试题福建省福州市鼓楼区福州格致中学鼓山校区2021-2022学年八年级上学期期中数学试题黑龙江省哈尔滨市呼兰区顺迈中学2021-2022学年八年级上学期段考数学试卷(12月份) 广东省深圳市布心中学2020-2021学年七年级下学期期末数学复习试卷(已下线)八年级上学期期中【易错60题考点专练】-2022-2023学年八年级数学上学期考试满分全攻略(人教版)江苏省苏州市太仓市四校联考2022-2023学年八年级上学期10月月考数学试题(已下线)专题1.42 线段的垂直平分线(巩固篇)(专项练习)-2022-2023学年八年级数学上册基础知识专项讲练(浙教版)(已下线)专题1.16 角平分线(培优篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(北师大版)河北省廊坊市三河市燕郊金子塔学校2022-2023学年八年级上学期期末考试数学试题(已下线)专题12.14 角平分线(分层练习)-2023-2024学年八年级数学上册基础知识专项突破讲与练(人教版)(已下线)专题1.14 角平分线(分层练习)-2023-2024学年八年级数学上册基础知识专项突破讲与练(苏科版)江苏省淮安市淮安区徐杨中学2023-2024学年七年级上学期9月月考数学试题江苏省无锡市梁溪区侨谊实验中学2023-2024学年八年级上学期10月月考数学试题江苏省无锡市侨谊实验中学2023-2024学年八年级上学期数学第一次月考试试题(已下线)期中复习(易错50题20个考点)-2023-2024学年八年级数学上学期期中期末考点归纳满分攻略讲练(苏科版)(已下线)期末复习(易错55题32个考点)-2023-2024学年八年级数学上学期期中期末考点归纳满分攻略讲练(人教版)江苏省无锡市滨湖区华庄中学2023-2024学年八年级上学期期中数学模拟试题重庆市渝北区六校联盟2023--2024学年八年级上学期第一次大练兵数学试题陕西省西安市逸翠园中学高新三中高新五初2023-2024学年八年级下学期期中数学试题(已下线)专题04 生活的轴对称(考题猜想,易错必刷43题11种题型专项训练)-2023-2024学年七年级数学下学期期末考点大串讲(北师大版)(已下线)专题01 三角形的证明(考题猜想,易错必刷41题13种题型专项训练)-2023-2024学年八年级数学下学期期末考点大串讲(北师大版)河南省郑州市第十一初级中学2023-2024学年八年级下学期5月期中考试数学试题(已下线)专题06 生活中的轴对称(7大题型+优选提升题)-备战2023-2024学年七年级数学下学期期末真题分类汇编(北师大版)