解题方法
1 . 我国古代的数学著作《九章算术·商功》中,将底面是直角三角形的直三棱柱称为“堑堵”.在如图所示的“堑堵”
中,
,
、
分别是
和
的中点,则平面
截“堑堵”
所得截面图形的面积为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/077ac3ca-9fdc-4f20-aa2e-42a77aa773d7.png?resizew=133)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90e17995e2f71e297d94ae51c7e5b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/077ac3ca-9fdc-4f20-aa2e-42a77aa773d7.png?resizew=133)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:山东省青岛市青岛第九中学2022-2023学年高一下学期期末数学试题