如图,△ABC为锐角三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/28/a86925ea-a8e4-4dbf-a128-476ff26c8f47.png?resizew=512)
(1)请在图1中用无刻度的直尺和圆规作图:在AC右上方确定点D,使∠DAC=∠ACB,且
;(不写作法,保留作图痕迹)
(2)在(1)的条件下,若
,
,
,则四边形ABCD的面积为 .(如需画草图,请使用试卷中的图2)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/28/a86925ea-a8e4-4dbf-a128-476ff26c8f47.png?resizew=512)
(1)请在图1中用无刻度的直尺和圆规作图:在AC右上方确定点D,使∠DAC=∠ACB,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4ab7e657f01bdfa235f8c4d6681d13.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/784d093b48df0ba4ae15ea1368fe85e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
2022·江苏无锡·中考真题 查看更多[18]
2022年江苏省无锡市中考数学真题(已下线)专题15 三角形解答题-三年(2020-2022)中考数学真题分项汇编(江苏专用)(已下线)2022年江苏省无锡市中考数学变式题24-28(已下线)专题16 视图与投影、尺规作图、命题与定理-2022年中考数学真题分项汇编(全国通用)(第2期)(已下线)勾股定理02练基础(已下线)专题17.9 勾股定理全章复习与巩固(知识讲解)-2022-2023学年八年级数学下册基础知识专项讲练(人教版)(已下线)专题18.20 勾股定理(中考真题专练)(巩固篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(沪科版)(已下线)专题18.9 勾股定理(全章复习与巩固)(知识讲解)-2022-2023学年八年级数学下册基础知识专项讲练(沪科版)(已下线)专题17.20 勾股定理(中考真题专练)(巩固篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(人教版)(已下线)第二节 尺规作图03综合测 广东省广州市广州大学附属中学2022~2023学年九年级数学上学期开学测试卷2023年湖北省襄阳市保康县中考模拟数学试题福建省漳州市厦门大学附属实验中学2023-2024学年九年级上学期期中数学试题江苏省无锡市惠山区阳山中学2023-2024学年九年级上学期12月月考数学试题2023年甘肃省定西市临洮县中考模拟(一)数学模拟试题2024年山东省青岛市中考数学模拟预测题河南省郑州市金水区实验中学2023-2024学年八年级下学期期中数学试题(已下线)查补重难点05 三角形与相似三角形-【查漏补缺】2024年中考数学复习冲刺过关(江苏专用)
更新时间:2022-06-26 16:50:51
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解答题-作图题
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适中
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名校
【推荐1】如图,⊙O是△ABC的外接圆,直径AB=5,
![](https://img.xkw.com/dksih/QBM/2022/8/22/3049899918786560/3071421184720896/STEM/64740e6f4bc2409dab2c00d38d9bca61.png?resizew=138)
(1)尺规作图:作劣弧BC的中点D.(保留作图痕迹,不写作法)
(2)连接AD,BD,若AC=3,求弦AD的长.
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(1)尺规作图:作劣弧BC的中点D.(保留作图痕迹,不写作法)
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解答题-作图题
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适中
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【推荐2】如图,两条公路
,
交于点O,村庄M,N的位置如图所示,M在公路
上,现要修建一个快递站P,使快递站到两条公路的距离相等,且到两村庄的距离也相等(要求:尺规作图,不写作法,保留作图痕迹).
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解答题-作图题
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适中
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【推荐1】(1)请用直尺(不带刻度)和圆规在图中作菱形BDEF,要求点D、E、F分别在边BC,AC和AB上(不写作法,保留作图痕迹)
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(2)若∠ABC=60°,∠BAC=75°,AB=4
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解答题-证明题
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适中
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【推荐2】如图,在平面直角坐标系中,
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(1)求证:
;
(2)
的度数为_________;
(3)当
点运动时,
的长度是否发生变化?若不变化,直接写出
的长,若变化请说出变化的规律.
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(1)求证:
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(2)
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(3)当
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(4)在
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解答题-证明题
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适中
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【推荐1】在
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绕点E逆时针旋转
得到线段
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,
的延长线过点C,若点P为
的中点,连接
,求
的长;
(2)如图2,
的延长线交
于点M,点N在
上,
且
,求证:
;
(3)如图3,F为线段
上一动点,E为
的中点,连接
,H为直线
上一动点,连接
,将
沿
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所在平面内,得到
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(2)如图2,
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解答题-证明题
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适中
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【推荐2】如图,
为
的直径,四边形
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,
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(2)若
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