在长方体
中,已知
,
,P,Q分别为
,
的中点,S为棱
的三等分点,
,过P,Q,S三点作一个平面
与
,
,
分别交于点R,M,N,即得到一个截面
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1baa1c07becd03537beeb09a31745cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbafedc202bd0d86c4dfdece9f8f4fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7efd95ee8c9364b61a66bf1e8f8cf02b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e97fcdcfd6183b976a61ef3222c607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b64dc3b7e1ccc5f0889f4a906e6f3f.png)
A.![]() | B.![]() |
C.![]() ![]() ![]() | D.点A到截面![]() |
22-23高一下·湖南·期末 查看更多[3]
湖南省名校联考联合体2022-2023学年高一下学期6月期末联考数学试题(已下线)专题7 立体几何中截面问题【练】(高一期末压轴专项)云南省昆明市五华区2023-2024学年高一下学期6月质量检测卷数学试题
更新时间:2023-07-02 15:42:18
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【推荐1】如图1,在矩形
与菱形
中,
,
,
,
分别是
,
的中点.现沿
将菱形
折起,连接
,
,构成三棱柱
,如图2所示,若
,记平面
平面
,则( )
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844657931567104/2844713479184384/STEM/66b7b4d75a89494d80b15fba956f4073.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844657931567104/2844713479184384/STEM/c3c21240789448b48b396eb70adfd673.png?resizew=158)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0041488020a3e19377b18a70fbf82e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c89f9fb5d1a84be8aee78dca23090d.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/274cf35acb4a1748d15c39d15a9bea7b.png)
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![](https://img.xkw.com/dksih/QBM/2021/11/5/2844657931567104/2844713479184384/STEM/66b7b4d75a89494d80b15fba956f4073.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844657931567104/2844713479184384/STEM/c3c21240789448b48b396eb70adfd673.png?resizew=158)
A.平面![]() ![]() | B.![]() |
C.直线![]() ![]() | D.四面体![]() ![]() |
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解题方法
【推荐2】如图,正方体
的棱长为1,
,
分别是棱
,
的中点,过
的平面与棱
,
分别交于点
,
.设
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/f9be9874-ef25-4c3d-99ba-5b29157fffce.png?resizew=163)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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A.四边形![]() |
B.![]() ![]() |
C.四边形![]() ![]() ![]() |
D.四棱锥![]() |
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【推荐1】已知正四棱柱
的底面边长为
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
A.![]() ![]() | B.异面直线![]() ![]() ![]() |
C.![]() ![]() | D.点![]() ![]() ![]() |
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【推荐2】在边长为2的正方体
中,点
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的中点,则( )
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A.![]() ![]() ![]() | B.点![]() ![]() ![]() |
C.![]() ![]() ![]() | D.平面![]() ![]() |
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【推荐1】在正方体
中,
,
、
、
分别是棱
、
、
的中点,则( )
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
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A.点![]() ![]() | B.直线![]() ![]() ![]() |
C.二面角![]() ![]() | D.三棱锥![]() ![]() |
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【推荐2】如图,已知六棱锥
的底面是正六边形,
平面
,
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A.![]() |
B.直线CB与直线PD所成角为![]() |
C.直线![]() ![]() |
D.直线PD与平面![]() ![]() |
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解题方法
【推荐1】如图,四棱锥
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是边长为2的正三角形,
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A.![]() ![]() |
B.![]() |
C.![]() |
D.若二面角![]() ![]() ![]() |
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【推荐2】如图,在等腰梯形
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A.在![]() ![]() ![]() |
B.存在某个位置,使得![]() |
C.当![]() ![]() ![]() ![]() |
D.四棱锥![]() |
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