1 . 如图所示,正方体
的棱长为
分别为
,
的中点,点
是正方体表面上的动点,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c407eeb34204a1df967b8fbe481cb04d.png)
平面
,则点
在正方体表面上运动所形成的轨迹长度为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a132288b3f023748b54cf3a5a8b940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c407eeb34204a1df967b8fbe481cb04d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1012e31eb8a9a3aed7e6cbba09534e0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/be0c3b1e-775e-4449-8c19-0ebd052e064c.png?resizew=201)
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2023-03-17更新
|
1303次组卷
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7卷引用:广西南宁市2023届高三第一次适应性测试(文科)数学试题
广西南宁市2023届高三第一次适应性测试(文科)数学试题(已下线)专题12立体几何(选择填空题)陕西省西安市西北工业大学附属中学2022-2023学年高一下学期期中数学试题四川省泸县第一中学2022-2023学年高二下学期期中理科数学试题安徽省淮北市树人高级中学2023-2024学年高二上学期开学检测数学试题(已下线)重难点突破04 立体几何中的轨迹问题(六大题型)(已下线)第10章 空间直线与平面(压轴题专练)-2023-2024学年高二数学单元速记·巧练(沪教版2020必修第三册)
解题方法
2 . 如图,在四棱柱
中,
平面
,
,
,
,
为棱
上一动点,过直线
的平面分别与棱
,
交于点
,
,则下列结论正确的是__________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/13/212a9987-53d1-4408-b01b-07e4200b2afc.png?resizew=176)
①对于任意的点
,都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38480c0817e9cb1fd1653e93f231abbd.png)
②对于任意的点
,四边形
不可能为平行四边形
③存在点
,使得
为等腰直角三角形
④存在点
,使得直线
平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4340375ca8abdbd6998760c944f38d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f487191e72e8d7600ad2051828678cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/13/212a9987-53d1-4408-b01b-07e4200b2afc.png?resizew=176)
①对于任意的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38480c0817e9cb1fd1653e93f231abbd.png)
②对于任意的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0d75422e2e1ae0ed77f764cb47d375.png)
③存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46d72cf9ade99d60cdfef83f1c91da6f.png)
④存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963a91995abd4927d75406d16e10a81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0d75422e2e1ae0ed77f764cb47d375.png)
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