如图,直线
与y轴交于
,按如图方式作正方形
点
在直线
上,点
在x轴上,图中阴影部分三角形的面积从左到右依次记为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3dabace330ccdd9755fbcf32d5d6343.png)
_________ ,
__ (用含n的代数式表示,n为正整数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fceb9eb57ca36db386ffafeda213599c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c302a0b969e7b65ff130311e29fbcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a611e64c05b0e960f8412e38a7a9b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fceb9eb57ca36db386ffafeda213599c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a14ab707ddca48fbb45b89cc510ddcb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbfae23a2cb5145cd9d37610dd443bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3dabace330ccdd9755fbcf32d5d6343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
![](https://img.xkw.com/dksih/QBM/2022/11/2/3101135937044480/3101840258719744/STEM/5844cb8b2c014d7da0c4d30012a5326a.png?resizew=235)
22-23九年级上·河北保定·期中 查看更多[2]
更新时间:2022-11-03 20:13:04
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适中
(0.65)
【推荐1】如图点
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
在抛物线
上,点
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2857fac4963b129d99e79dcb3e13d295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
在y轴上,若
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
都为等腰直角三角形,则点
的坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
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【推荐2】正方形
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【推荐1】如图,在
中,
,D为边AB的中点,E、F分别为边AC、BC上的点,且
,
若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea517f3fbce3ed00b759b22ce376bf9c.png)
______
,线段AB的长度![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882589c896c6993d9687f0e14a283481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13d71a5e5e491a8c54fccc405b35ed06.png)
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【推荐2】如图,
中,
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【推荐1】如图,已知在
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的顶点G、F分别在
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名校
【推荐2】如图,正方形
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