如图,在平面直角坐标系中,已知点
,点
,其中a、b满足
.
(2)如果在第二象限内有一点
,请用含m的式子表示四边形
的面积;
(3)在(2)的条件下,当
时,在坐标轴上是否存在点N,使得四边形
的面积与
的面积相等?若存在,求出点N的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c6991563453cd366d99513c393d1ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7255cbfbc86408b7cd865e89e5de0fb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47cfd31cad9c12fd4bf4a669baeec3a1.png)
(2)如果在第二象限内有一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb428dcd501ba430daa1355e29ca13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b7c661bc0b3106873d7990613a54ce.png)
(3)在(2)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975ef29bfe20f84c041b8c6ff08bc9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b7c661bc0b3106873d7990613a54ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7ad41b36674fd6e90176ee24cdefbb.png)
更新时间:2024-05-09 17:45:49
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解答题-计算题
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适中
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【推荐1】已知:x,y满足
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(1)
______,
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(2)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb558ff5ad0e93b36493697657a4ff66.png)
(1)
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(2)求
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(3)求
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解答题-问答题
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【推荐1】如图,在平面直角坐标系中,点A(﹣1,﹣2),B(5,﹣2).点C(2a+1,2﹣a)在第一象限内,过点C作直线CD∥AB,交y轴于点D.
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895454772584448/2951862998114304/STEM/e783837f-6961-4182-8e21-1cd4a5a5d520.png?resizew=171)
(1)若AB=
CD,求点C的坐标.
(2)若△ABC的面积为9,求△ABC的周长.
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895454772584448/2951862998114304/STEM/e783837f-6961-4182-8e21-1cd4a5a5d520.png?resizew=171)
(1)若AB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
(2)若△ABC的面积为9,求△ABC的周长.
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【推荐2】如图是某城市一个区域的示意图,建立平面直角坐标系后,学校和体育场的坐标分别是
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【推荐1】如图,直线
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(2)当点D沿射线
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(3)当动点D在直线
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与
全等,则t的值为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f59747cee312ee5140643428cae79efa.png)
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(2)当点D沿射线
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9d65b5d2328ebfb79af9984a1e8de2.png)
(3)当动点D在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f517953a21c2a45fd8465072c44bfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2657e02314469ad2b13d31dce41b4343.png)
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解答题-作图题
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适中
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【推荐2】如图是一个
的长方形网格,每个小正方形的边长为1,小正方形的顶点叫做格点,一条线段
和一个三角形
的顶点都在格点上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/043332af-81ca-424e-9fa6-8e45fa149dae.png?resizew=348)
(1)直接写出
__________;
(2)请利用平移或全等三角形的相关知识,仅用无刻度直尺完成下列画图(不写画法,保留画图痕迹);
①请画出格点
的边
上的高
和中线
;
②在线段
右侧找一个格点F,画出格点
使它与以A、B、C为顶点的三角形全等;
③在所作的格点
的边
上找一点Q,再连接
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/853c1bdebdfdabede9214a4abc792537.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/043332af-81ca-424e-9fa6-8e45fa149dae.png?resizew=348)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42acd3ee01d9f843a8579ffb0b7d9d82.png)
(2)请利用平移或全等三角形的相关知识,仅用无刻度直尺完成下列画图(不写画法,保留画图痕迹);
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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②在线段
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
③在所作的格点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e215c6d47ad8eeaa517bd1de9b650ea3.png)
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