解题方法
1 . 在矩形
中,
,
,沿对角线
将矩形折成一个大小为
的二面角
,当点B与点D之间的距离为3时![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4961a7dd688b8a12db7d1d3480c6b87f.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4746df85049d1651d3f6c30212a7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c909cd1b6f3fa1ec39eb245e8f5c11c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4961a7dd688b8a12db7d1d3480c6b87f.png)
您最近一年使用:0次
2 . 如图,在棱长为
的正方体
中,
在棱
上,且
,以
为底面作一个三棱柱
,使点
分别在平面
上,则这个三棱柱的侧棱长为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae29000bb323cdde854b9b2990702106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74bd812e68ff60c201ab36f33305f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6dec2c74186d6a781e0c38ad794a225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c28abb154f41e1ca9816c9c9c2433ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f6c3f861c5d2eaeb82cee88e70fb69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6125a3317868d056dc1355c2f6f260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d12391c3c228ba27ecb2c23afc39008.png)
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3 . 如图,在长方体
中,已知
,
,
,若对角线
上存在一点
,使得
,则
的最大值是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e0d2c3608c31abe8a71da91dcfd70b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a59f7400fc9ba75e12991a49adcf1f08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/641420d1ceecfa4531725fefeba60009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d62b6e7d719835c9fca341eb1398977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3438f9487fc17c3b67a4706733378568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41fd3dbc21137cc3dd200ca4bfe8a01e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2275c7753ff84e491cb18ce86cde3713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74eed0cd9cfbff4e684215492846610e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/59df956c-8433-4a78-b613-5598051014ce.png?resizew=151)
您最近一年使用:0次
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解题方法
4 . 各棱长均为1且底面为正方形的平行六面体
,满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6660dbf8615c2a0dda71f6d9f395c1a5.png)
______ ;此平行六面体的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ecbca919bff5a39a99dd7f867dd61f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6660dbf8615c2a0dda71f6d9f395c1a5.png)
您最近一年使用:0次
2024-01-18更新
|
1183次组卷
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5卷引用:江西省南昌市第二中学2024届高三“九省联考”考后适应性测试数学试题(一)