如图,有一块锐角三角形材料,边
,高
,要把它加工成矩形零件,使其边在BC上,其余两个顶点分别在AB,AC上,且
,则这个矩形零件的长为( )
![](https://img.xkw.com/dksih/QBM/2021/11/15/2851721359572992/2859644148047872/STEM/d30952db-9c06-4e6c-b2dc-e7b76dcb86b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/804cd8843150965cb8a0613ff243b9a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a6fbedcd15d9e6c9d7bcaff0c83db22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0519bc12d783217b4842d60a0bbdf9da.png)
![](https://img.xkw.com/dksih/QBM/2021/11/15/2851721359572992/2859644148047872/STEM/d30952db-9c06-4e6c-b2dc-e7b76dcb86b8.png)
A.32mm | B.36mm | C.40mm | D.44mm |
更新时间:2021-11-29 21:01:58
|
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【推荐1】如图,在四边形
中,
,
,
,E、F、G、H分别是
、
、
、
的中点,连接
、
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/2020/2/6/2393321677643776/2393350145884160/STEM/1bd7aab202724a9785b2b3cfaf93e608.png?resizew=163)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图所示,在正方形
中,P是对角线
上一点,过P作
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,垂足分别为E、F,连接
,若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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【推荐1】如图,在△ABC中,∠ABC=90°,DE垂直平分AC,垂足为O,AD∥BC,且AB=3,BC=4,则AD的长为( )
![](https://img.xkw.com/dksih/QBM/2016/2/29/1573977120612352/1573977126346752/STEM/e200261518224e3daf95e48c9831d6d5.png)
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【推荐2】如图,将一个装有水的杯子倾斜放置在水平桌面上,其截面可看作一个宽
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