如图,在平面直角坐标系中,正方形ABCD的顶点A在x轴正半轴上,顶点B,C在第一象限,顶点D的坐标
. 反比例函数
(常数
,
)的图象恰好经过正方形ABCD的两个顶点,则k的值是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37571f17bb232e169509250af5d6654b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://img.xkw.com/dksih/QBM/2021/6/17/2744902312337408/2745029235859456/STEM/43429c83-4799-4bb8-aa75-ad116f3b1c2d.png)
2021·浙江绍兴·中考真题 查看更多[14]
浙江省绍兴市2021年中考数学真题辽宁省沈阳市第一三四中学2021-2022学年九年级上学期期中数学试题(已下线)考点07 反比例函数及其应用-备战2022年中考数学一轮复习考点帮(浙江专用)江苏省淮安市洪泽外国语中学集团2021-2022学年九年级下学期随堂练习(一)数学试题2022年山东省威海市中考模拟数学试题二(已下线)专题07 反比例函数及其应用-备战2022年中考数学母题题源解密(浙江专用)(已下线)专题19 特殊平行四边形-备战2022年中考数学母题题源解密(浙江专用)(已下线)考点18 特殊平行四边形-备战2022年中考数学一轮复习考点帮(浙江专用)(已下线)专题12 三角形与四边形重难点题型-三年(2020-2022)中考数学真题分项汇编(浙江专用)(已下线)专题06 反比例函数-三年(2020-2022)中考数学真题分项汇编(浙江专用)(已下线)专题04 方程(组)与不等式(组)-三年(2020-2022)中考数学真题分项汇编(浙江专用)2022年广西玉林市玉州区中考数学二模试题(已下线)专题26.16 反比例函数与几何综合专题(培优篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(人教版)(已下线)专题6.33 反比例函数(全章直通中考)(培优练)-2023-2024学年九年级数学上册基础知识专项突破讲与练(北师大版)
更新时间:2021-06-17 17:19:11
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【推荐1】在正方形
的边长为4,F是AD上的动点,将
沿着CF折叠得到△FCE,连接AE、ED,当
是等腰三角形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e80bb0f244f283cd4c3faf809ba488d.png)
________________ .
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【推荐2】如图,在等边
中,过点C作射线
,点M,N分别在边
,
上,将
沿
折叠,使点B落在射线
上的点
处,连接
,已知
.给出下列四个结论:①
为定值;②当
时,四边形
为菱形;③当点N与C重合时,
;④当
最短时,
.其中正确的结论是________ (填写序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐1】如图,在平面直角坐标系
中,矩形
的顶点
,
分别在
轴,
轴的正半轴上,点
,
是
的两个三等分点,过点
,
作
轴的平行线分别交
于点
,
,反比例函数
的图象经过点
,分别交
,
于点
,
,分别过点
,
,作
轴的垂线,垂足分别为
,
.图中阴影部分的面积分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/7ad7b8df-5b58-4363-8a7e-d7a75b604b86.png?resizew=287)
(1)若点
的坐标为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
_______________ ;
(2)若
,则点
的坐标为______________ ;
(3)若
,则
=______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a122e25cf4eb9f03ffe5ec823bfc31.png)
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(1)若点
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ffc188aac9e5081aa26998b9f0abe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
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【推荐2】如图,在
中,
,
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在
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【推荐1】在
中,
,点
在边
上,连接
,
于
,交
于点
,
,
,
,则
的长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9178fc8b5d65aa75fa9196294a0db7e.png)
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【推荐2】已知:四边形ABCD中,AB=AD=CD,∠BAD=90°,三角形ABC的面积为1,则线段AC的长度是___________ .
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【推荐1】如图,在△ABC中,∠BAC=90°,AB=AC=3,D为BC边上一点,且
,以D为一个顶点作正方形DEFG,且DE=BC,连接AE,将正方形DEFG绕点D旋转一周,在整个旋转过程中,当AE取得最大值时AG的长为_______ .
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【推荐2】已知在平面直角坐标系中放置了个如图所示的正方形(用阴影表示),点
在
轴上,点
、
、
、
、
、
、
在
轴上.若正方形
的边长为1,
,
,则点
到
轴的距离是________ .
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