1 . 如图,在平面直角坐标系
中,点
在直线
上,点
的横坐标为
,点
是
轴正半轴上一点,点
在反比例函数
图象上,联结
、
和
.如果四边形
是矩形,那么
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9940526785ca763da2dfa35e77c934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e902eb263971b466d0fcd91c56b453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-03-18更新
|
213次组卷
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3卷引用:2024年贵州省黔南州中考数学模拟预测题(一)
2 . 如图所示,在
的正方形网格中,每个小格的顶点叫做格点,点A,B,C,D都在格点上,线段
与
相交于点E,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01b58184ef17d47645f361dcd5b187c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc54a3cd8fc76ea383aeb1acb8f7ec31.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/3286198f-f63a-40c3-8594-8631f5045c86.png?resizew=170)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 如图所示,在
中,
,以
为直径的
分别交
于点
,连接
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c4bb43fbf9d56c1d0e4048abd02cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49bbafaa7d8117da1a389816616cf8d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5345f892125374809bcaaab5da8d3f5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e261a942097fc850672dc68fab43229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
A.1 | B.![]() | C.2 | D.![]() |
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2024-03-13更新
|
140次组卷
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3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2024年甘肃省武威市凉州区西营镇九年制学校教研联片二模数学模拟试题(已下线)培优冲刺01 三角形中的常见模型综合训练(14模型)-【查漏补缺】2024年中考数学复习冲刺过关(全国通用)
4 . 如图,在正方形
中,点E是
边的中点,
的垂直平分线分别交
,
边于点F,G,垂足为点H.若
,则
的长为 __ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.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/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
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2024-03-10更新
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153次组卷
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5卷引用:2024学年贵州省毕节市织金县部分学校九年级下学期一模考试数学试题
2024学年贵州省毕节市织金县部分学校九年级下学期一模考试数学试题山西省太原市2023-2024学年九年级上学期期末数学试题(已下线)第06讲 正方形的性质和判定(知识解读+达标检测)-2023-2024学年八年级数学下册《知识解读·题型专练》(苏科版)(已下线)第10讲 专题5 正方形中的三大模型-【帮课堂】2023-2024学年八年级数学下册同步学与练(人教版)(已下线)专题05 三角形中的证明与计算问题-2024年中考数学二轮热点题型归纳与变式演练(江苏专用)
5 . 如图,小明为了测量一大楼的高度,在地面上放一平面镜,镜子与大楼的距离
,他与镜子的距离
是
时,刚好能从镜子中看到楼顶
,已知他的眼睛到地面的高度
为
,结果他很快计算出大楼的高度
,你知道有多高吗?请加以说明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f453318cc9174f81aa31b52b2330fef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/386f5889ae7aa13ad09b3cdb4f7f89ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e504b2efc56d84e80be3fffc975c285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/0df408c6-1b78-4667-a54b-2f6eda47339b.png?resizew=187)
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6 . 问题情境:数学课上,老师利用两个特殊的四边形进行图形变换操作探究,如图1,正方形
和正方形
,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/ebc9b757-3562-42dc-b750-c34264a08267.jpg?resizew=427)
(1)发现:当正方形
绕点A旋转,如图2,①线段
与
之间的数量关系是______;
②直线
与直线
之间的位置关系是______.
(2)探究:若四边形
与四边形
都为矩形,矩形
绕点A旋转,如图3,且
,
.请写出直线
和直线
的位置关系,并说明理由.
(3)应用:在(2)的条件下,连接
(点E在
上方),矩形
绕点A㫌转至
,且
,
,则线段
长是多少?(直接写出结论)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/ebc9b757-3562-42dc-b750-c34264a08267.jpg?resizew=427)
(1)发现:当正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)探究:若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1507da3daed983c2f355d4caebb66d72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0655123b9076f6d5555eb624cdd0ff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871799117ea05b1b0d5281f49748fb7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
(3)应用:在(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e8eecdc39804fcc33c5d2b3bdf82a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5644573f740b68ea941bd49eb3253a62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86338536656046e93b53672ade9a78b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
您最近一年使用:0次
7 . 已知如图,在
中,点D是
边上一个动点,连接
,在
的右侧作
,
边交
于点E,当点D在
边上运动时(点D不与点A、点B重合),始终保持
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/5d088476-f05e-4633-a771-19631ac9be45.png?resizew=165)
(1)你能否再添加一个条件,使
;
(2)在(1)的条件下,当
,
,
时,求A、D两点之间的距离.
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d19f963f7c803bcfcbb265ec6d4304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bebf7cd7e9a10410f74901c2279546b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/5d088476-f05e-4633-a771-19631ac9be45.png?resizew=165)
(1)你能否再添加一个条件,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7650964ab5e8e20673939a9739f83.png)
(2)在(1)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f218914337edd06e59e75d90b777e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
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8 . 已知如图,
中,
,
,
,E、F分别是边
上的动点,点E从A向B匀速运动,点F从B向C匀速运动,E、F运动速度均为
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/794a8ee4-4822-4d59-8802-8c577d9f7e14.png?resizew=126)
(1)求
的长;
(2)当点E与点F同时开始运动,t秒后,
(点E与点C是对应点),请求出t的值.
![](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/52d4bc1be051f904d4a6e06dc825395b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6beb17d468d0e90f9c08a8dbbc05541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3355e2fa0ac6c675f02ee36c3ced4f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9174c3b1324cf81098e42e0480bcc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef788098369b8fac1f4674cae70aa22.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/794a8ee4-4822-4d59-8802-8c577d9f7e14.png?resizew=126)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)当点E与点F同时开始运动,t秒后,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734f1ca048a5c2d75a7a6163c55258bd.png)
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9 . 在
中,
,
,
,将
绕点C逆时针旋一个角度
得到
,连接
,
.
(1)如图①,当
时,求证:
;
(2)如图②,当
时,点
在
上,
的延长线交
于点P,请确定
与
的位置关系,并说明理由;
(3)如图③,当
时,如果![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17288da70b31823293794cb289e3123.png)
,连接
,求
的长.
![](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/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56667ecdd31b9fbd05deb9626c574f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018af6682b038cfdf6ed136943413271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed7bc83ebd009c5a7f58116eb8f5d8f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/d3507f9f-bedc-408b-be84-2d5dfb8c1eee.png?resizew=427)
(1)如图①,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/708d48b595c17d4dccf9b4086d7e664e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883bf9d1b347011675fe169dfce7130b.png)
(2)如图②,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac762a2899a58faa0d3ab44f1281fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b10100be43f77a13fa0ccd1c1d72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018af6682b038cfdf6ed136943413271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed7bc83ebd009c5a7f58116eb8f5d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018af6682b038cfdf6ed136943413271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed7bc83ebd009c5a7f58116eb8f5d8f.png)
(3)如图③,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13b5ea2fc43b19ca043581eb94197234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17288da70b31823293794cb289e3123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4745d21979bb1e2a5c14e7eee49cc75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932c1e7b8e4167bda4c7b2b9123fac0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932c1e7b8e4167bda4c7b2b9123fac0c.png)
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10 . 安顺白塔又叫望城塔,位于安顺新大十字的西秀山上,始建于元泰定三年(1326年),是安顺三大元代建筑之一.小聪来游玩白塔后,很想知道白塔的高度,于是他用所学的知识进行测量求解,测量方法如下,如图所示,先在点A处放一平面镜,小聪站在距A点1米的点B处,恰好在平面镜中看到塔的顶部点M,再将平面镜沿NA方向移动3.6米至点D处(即
米),小聪站在距D点1.6米的点E处,佮好再次在平面镜中看到塔的顶部点M,已知小明眼睛到地面的距离
米,请根据题中提供的相关信息,求出白塔的高度MN(平面镜大小忽略不计).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd16fc111a66466a024e4f703ff7c8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262c5f253e461a9ba62c7115185f0a8e.png)
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