1 . 如图,在
中,
,分别以点A、C为圆心,大于
的长为半径作弧,两弧相交于两点,过这两点作直线
,分别交
、
于点D、E,连接
,则
的度数为__________ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04cb71d2d9de9d0f4a573b56885f5097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c93148adbc6e856da9a9d263f485d003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd1bc0388e7fad3e849ca39c67f5034.png)
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3卷引用:吉林省吉林市船营区2021年中考数学一模试卷
2 . 如图,在Rt△ABC中,∠BAC=90°,以点A为圆心,以AB长为半径作弧交BC于点D,再分别以点B,D为圆心,以大于
BD的长为半径作弧,两弧交于点P,作射线AP交BC于点E,若AB=3,AC=4,则CD=( )
![](https://img.xkw.com/dksih/QBM/2021/4/13/2699162007330816/2700563017670656/STEM/69d0dc99-61fc-4f4e-9223-dc488c625ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2021/4/13/2699162007330816/2700563017670656/STEM/69d0dc99-61fc-4f4e-9223-dc488c625ac8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8卷引用:吉林省长春市省二实验学校2020—2021学年九年级上学期(五四制)第三次月考数学试题
吉林省长春市省二实验学校2020—2021学年九年级上学期(五四制)第三次月考数学试题2021年吉林省长春五十二中赫行实验学校中考数学二模试题2021年新疆乌鲁木齐市两校联考中考数学第一次质量监测试卷(已下线)【万唯原创】2021年山西省面对面-练册第七章2(已下线)【万唯原创】2021年广东试题研究-练册-第七章1(已下线)【万唯原创】2021年河北面对面-练册-第四章 三角形5(已下线)【万唯原创】2021年河北面对面-第4章三角形第5节(已下线)【万唯原创】2021年河南省面对面-专题练-专题1+2
3 . 如图,在
中,
,以点
为圆心,
长为半径画弧,交
于点
和点
再分别以点
,
为圆心,大于
长为半径画弧,两弧相交于点
,作射线
交
于点
.若
,
,则
的长度是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.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/7f9e8449aad35c5d840a3395ea86df6d.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.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/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc90c2d45477e166b02359525f40aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://img.xkw.com/dksih/QBM/2021/3/21/2682424896045056/2685458508750848/STEM/7a3cce28-a391-4430-9f52-30f052a98c1b.png)
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4 . 如图,在
ABC中,∠ACB=90°,∠A=30°,BC=4.
(1)在题给的图中,按以下作法用直尺和圆规作图,并保留作图痕迹:
①以点C为圆心,CB长为半径作弧,交AB于点D;
②再分别以点B和点D为圆心,大于
BD的长为半径作弧,两弧相交于点E;
③作射线CE交AB于点F.
(2)在你所作的图中,求AF.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(1)在题给的图中,按以下作法用直尺和圆规作图,并保留作图痕迹:
①以点C为圆心,CB长为半径作弧,交AB于点D;
②再分别以点B和点D为圆心,大于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
③作射线CE交AB于点F.
(2)在你所作的图中,求AF.
![](https://img.xkw.com/dksih/QBM/2021/1/30/2647094404096000/2651466815406080/STEM/440063bd-2ff9-4937-9276-eec87a35dd3a.jpg?resizew=224)
您最近一年使用:0次
5 . 下面是小明设计的“作一个含
角的直角三角形”的尺规作图过程.
已知:如图,直线
及直线
上一点
.
, 使得
,
.
①在直线
上取点
;
②分别以点
为圆心,
长为半径画弧,交于点
;
③作直线
,交直线
于点
;
④连接
.
就是所求作的三角形.
根据小明设计的尺规作图过程,
(1)使用直尺和圆规,依作法补全图形(保留作图痕迹);
(2)完成下面的证明:
证明:连接
,
,
.
,
是等边三角形.
.
,
点
在线段
的垂直平分线上(①)(填推理的依据).
.
.
(②)(填推理的依据).
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e874929e36b114ef4a7955fe040f812c.png)
已知:如图,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb01d2b57580731c8b807ac8cffc8ba.png)
①在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
②分别以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eee517985834c1713f2060790ce1465b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ece794a3e4a1e3543f25f9630cd7ae7.png)
③作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
④连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
根据小明设计的尺规作图过程,
(1)使用直尺和圆规,依作法补全图形(保留作图痕迹);
(2)完成下面的证明:
证明:连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7925da8290b87a83c678418ef96fac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02647cf4960e9eec6e35d375288cf305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9e118dc050489e3163f44ed025e0931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf419ea7f2591a738019e91370e8d670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760311ce45f0ee072e87c20950d1ead2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcaeacf09a0619ab8609daf73e000e26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3b625951c46d349486e0cb642138d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f8744897e1c69e7ab61d65166187f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eedec50871a20a4eb54e8f676bb5d517.png)
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|
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4卷引用:吉林省白山市江源区2023-2024学年八年级上学期期末数学试题
吉林省白山市江源区2023-2024学年八年级上学期期末数学试题(已下线)吉林省白山市临江市2023-2024学年八年级上学期期末数学试题北京市丰台区2020-2021学年八年级上学期期末数学试题 河南省濮阳市范县2023-2024学年八年级上学期期中数学试题
真题
名校
6 . 如图,在
中,按以下步骤作图:①分别以B,C为圆心,以大于
BC的长为半径作弧,两弧相交于M,N两点;②作直线MN交AB于点D,连接CD,若CD=AC,∠B=25
,则∠ACB的度数为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/a1180aa8-e90e-4c38-ab84-a18f9c7096e2.png?resizew=149)
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|
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25卷引用:2019年吉林省长春市新区中考数学模拟试题(5月份)
2019年吉林省长春市新区中考数学模拟试题(5月份)吉林省长春新区2018-2019学年九年级下学期阶段性诊断练习数学试题2016届河南商丘柘城县张桥中学中考模拟数学试卷2017届湖北省赤壁市九年级下学期第一次模拟(调研)考试数学试卷内蒙古准格尔旗2017年初中毕业升学第二次模拟考试数学试题天津市红桥区 铃铛阁中学 2017-2018学年 八年级数学上册 轴对称图形 填空题练习山西省晋中市灵石县第四中学2017-2018学年八年级上期末数学试卷浙江省宁波市鄞州区(东钱湖中学、李关弟中学等校)2018-2019学年八年级上学期期中联考数学试题【校级联考】河南省南阳市南召县2017-2018学年八年级(上)期末数学试题山东省泰安市高新技术产业开发区2019-2020学年七年级上学期期中数学试题湖南省长沙市一中湘一南湖学校2019-2020学年八年级上学期期中数学试题(已下线)【万唯原创】2017年河南省中考数学-面对面-第一部分第七章 (1)(已下线)【万唯原创】2019年河南省中考数学试题研究河南数学第七章图形的变化1+2(已下线)【万唯原创】2017年河南省中考数学逆袭卷-特训8+9+10(已下线)【万唯原创】2019年河南省中考数学面对面正文第七章图形的变化河南省鹤壁市淇滨区淇滨中学2020-2021学年八年级上学期期中数学试题河南省洛阳市伊川县2020-2021学年八年级上学期期末数学试题2021年内蒙古包头市东河区中考二模数学试题2021年广东省湛江市第二中学九年级下学期6月月考数学试题2014河南省中考数学真题2021年四川省成都市中考数学模拟试卷(二)湖南省长沙市岳麓区长郡双语实验中学2022-2023学年九年级上学期第一次月考数学试题 湖南省郴州市永兴县树德中学2021-2022学年八年级上学期期中数学试卷辽宁省葫芦岛市绥中县2023-2024学年八年级上学期期末数学试题新疆维吾尔自治区喀什地区英吉沙县2022-2023学年七年级上学期期中数学试题
名校
7 . 如图,在
中,
,据尺规作图的痕迹判断以下结论错误的是( )
![](https://img.xkw.com/dksih/QBM/2020/11/16/2594099827695616/2606927214936064/STEM/abe1c48063c942ee89809b7e3a5e7b16.png?resizew=193)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://img.xkw.com/dksih/QBM/2020/11/16/2594099827695616/2606927214936064/STEM/abe1c48063c942ee89809b7e3a5e7b16.png?resizew=193)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-12-08更新
|
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3卷引用:吉林省第二实验学校2020-2021学年九年级上学期第四次月考月考数学试题
8 . 如图,已知点A、B和直线m,在直线m上求作一点P,使PA=PB.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/5/aa152265-a2ef-4c52-9047-3522debcce7d.png?resizew=162)
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9 . 如图,在△
中,
>
,按以下步骤作图:分别以点
和点
为圆心,大于
的长为半径作圆弧,两弧相交于于点
和点
,作直线
交
于点
;连接
,若
=8,
=5,则△
的周长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.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/9d78abbad68bbbf12af10cd40ef4c353.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/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/20/926934dd-d6a7-4a0e-97ac-2f3a518fd8d1.png?resizew=158)
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10 . 如图,一位同学用支持和圆规作图,作法如下:以点
为圆心、
为半径作圆弧,交
于点
,分别以点
和点
为圆心,大于
一半的长为半径作圆弧,两弧在
内部交于点
,则一定有( )
![](https://img.xkw.com/dksih/QBM/2020/11/6/2586983883980800/2593402157768704/STEM/e431065a4db54e7caaabe6878a3cd93e.png?resizew=144)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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