名校
1 . 如图所示,二面角
为
,
是棱
上的两点,
分别在半平面内
,且
,
,
,
,
,则
的长______ .
![](https://img.xkw.com/dksih/QBM/2019/3/26/2169054127112192/2170394739605504/STEM/5df431a791a94542945db47ba30ddd12.png?resizew=246)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c638fb895acd987140d0ca6bef097499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb0a2d7d40a6c0bf1fddb802db381689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71e6ea7333dbc78d0a7b9bc3892f940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2019/3/26/2169054127112192/2170394739605504/STEM/5df431a791a94542945db47ba30ddd12.png?resizew=246)
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2019-03-28更新
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7卷引用:广西壮族自治区玉林市2022-2023学年高二上学期1月期末教学质量监测数学试题