在平面直角坐标系中,正方形
如图摆放,已知
,
,则点C的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c240561788bc63f41a6703219fb66d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c09615735d331befd07664aa47cb8a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/7/23c085b2-f913-4456-9945-dd766ee572fd.png?resizew=115)
A.![]() | B.![]() | C.![]() | D.![]() |
22-23八年级下·河南新乡·期末 查看更多[2]
更新时间:2023-09-07 22:44:38
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【推荐1】如图,
过原点
,且与两坐标轴分别交于点 A、B,点 A 的坐标为
,点 M是第三象限内圆上一点,
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的半径为( )
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A.4 | B.5 | C.6![]() | D.2 |
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【推荐2】如图,在平面直角坐标系中,
轴,
轴,点D、C、P、H在x轴上,
,
,
,
,
,把一条长为2023个单位长度且没有弹性的细线(线的粗细忽略不计)的一端固定在点A处,并按
…的规律紧绕在图形“凸”的边上,则细线另一端所在位置的点的坐标是( )
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【推荐1】如图,某同学剪了两条宽均为
的纸条,交叉叠放在一起,且它们的交角为60°,则它们重叠部分的面积为( ).
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【推荐2】如图,
为正方形
的边
上一点,以
为圆心、
为半径作
,交
于点
,过点
作
的切线
交
于点
,将
沿
翻折,点
的对应点
恰好落在
上,则
的值为______.
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名校
【推荐1】我们约定:在平面直角坐标系中,存在横、纵坐标互为相反数的点为“反量点”,顶点是“反量点”的二次函数为“反量函数”,若“反量函数”y=x2﹣2x+c与正方形ABCD的边有公共点,其中点A(t,0),B(t+3,0),C,D两点在x轴上方,则t的取值范围为( )
A.﹣1≤t≤3 | B.﹣4≤t≤6 | C.﹣4≤t≤3 | D.﹣1≤t≤6 |
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解题方法
【推荐2】如图,正方形
和正方形
的顶点
在同一直线
上,且
,给出下列结论:①
,②
,③
④
,其中正确的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607543bb9f55b8a141ed2d6cf0e1a20b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd99b5307e1febce537a8cd903c6e6c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2989ecba9e20f79c5364de2d02b02318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac37ea42b599be0ecb078458616b8658.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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