1 . 如图所示,
为水平放置的
的直观图,其中
,
,
,则
的面积是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36511a452d4ec7a6919fda1d5bffc067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7de7173aa19790703fcc375ada6f11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e912b1aed1dcf10a9677858f0b0c733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ab25321f41bc348d88ce366ce3c997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/ec67aba7-7e53-42cf-b390-9798193fafab.png?resizew=181)
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20-21高一下·全国·课后作业
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2 . 如图所示,△A′B′C′表示水平放置的△ABC在斜二测画法下的直观图,A′B′在x′轴上,B′C′与x′轴垂直,且B′C′=3,则△ABC的边AB上的高为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/f280438f-252a-4799-8718-1cbceca49e29.png?resizew=162)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/f280438f-252a-4799-8718-1cbceca49e29.png?resizew=162)
A.6![]() | B.3![]() |
C.3![]() | D.3 |
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