如图,“赵爽弦图”由4个全等的直角三角形围成,在
中,
,
,
,若图中大正方形的面积为60,一个直角三角形的面积为10,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df81cda12d7601d58b1d9c7c180c4d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e781a2489271bfd1597cba1bb6f5887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/251ff7feb184a6fb1714743fa8b5739b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/d5836b70-460b-4814-9c56-30319c5b1fdf.png?resizew=111)
更新时间:2024-01-22 00:04:58
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【推荐1】如图,边长为
的正方形纸片剪出一个边长为
的正方形之后,余下部分又剪开拼成一个长方形(不重叠无缝隙),若拼成的长方形一边长为2,其面积是__________ .
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【推荐2】有若干个大小形状完全相同的小长方形现将其中
个如图1摆放,构造出一个正方形,其中阴影部分面积为
;其中
个如图2摆放,构造出一个长方形,其中阴影部分面积为
(各个小长方形之间不重叠不留空),则每个小长方形的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba505969331b28f0e2d3047d49988914.png)
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【推荐1】如图,在梯形
中,
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,
,
、
分别是
、
的中点,
是直线
上的一点,则
的最小值为______ .
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【推荐2】如图,沿对角线AC折叠正方形ABCD,使得B、D重合,再折叠
,点D恰好落在AC上的点E处,测得折痕AF的长为3,则C到AF的距离CG为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://img.xkw.com/dksih/QBM/2022/6/2/2992746116136960/2994664550383616/STEM/4fe06961-cd00-4bb1-9b9d-bd5570a36793.png?resizew=178)
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