名校
1 . 如图,矩形
中,
,
,
为边
的中点,沿
将
折起,点
折至
处(
平面
),若
为线段
的中点,平面
与平面
所成二面角
,直线
与平面
所成角为
,则在
折起的过程中,下列说法正确的是()
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8588e18e27bfebf7c81c7e3c7efb1149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/483f030abf61c6a0882d656d63cf4512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/483f030abf61c6a0882d656d63cf4512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
A.存在某个位置,使得![]() |
B.![]() ![]() |
C.![]() |
D.三棱锥![]() ![]() ![]() |
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名校
2 . 四棱锥
的底面为正方形,
与底面垂直,
,
,动点
在线段
上,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/dfb941a9-284d-4bea-a8b5-ac4271b14a07.png?resizew=132)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e7c5a551adc7663e9d74c42eb48aa8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/536dfcb262266fde18061ffe18ab2a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/dfb941a9-284d-4bea-a8b5-ac4271b14a07.png?resizew=132)
A.不存在点![]() ![]() | B.![]() ![]() |
C.四棱锥![]() ![]() | D.点![]() ![]() ![]() |
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2024-01-10更新
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4卷引用:广东省中山市中山纪念中学2024届高三上学期第一次调研数学试题
广东省中山市中山纪念中学2024届高三上学期第一次调研数学试题湖南省长沙市第一中学2024届高三上学期月考数学试卷(五)湖南省大联考长沙市一中2024届高三上学期月考数学试卷(五)(已下线)第18讲 第八章 立体几何初步 章节验收测评卷-【帮课堂】(人教A版2019必修第二册)
名校
3 . 如图所示,在棱长为2的正方体
中,P,Q分别是线段
,BD上的点(不与端点重合),
,
,下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/fb0532bf-0443-4341-8fa5-4a0d51656dfe.png?resizew=152)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35a78652686a1c181c08a07556805cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c926aa3b6fea99f62eeb593b77a6a17d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/fb0532bf-0443-4341-8fa5-4a0d51656dfe.png?resizew=152)
A.当![]() ![]() ![]() |
B.当![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() |
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21-22高二上·福建厦门·开学考试
名校
4 . 如图,在三棱锥
中,
,
,
,
,且
到平面
的距离为1,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/9/13/2807128413487104/2815913203351552/STEM/582535e8902e4cf9a6a2b6b3e2edd0f9.png?resizew=204)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08aa6fd52f3933cbded9ce8c880b4a10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbd1316b9d1f0c1e71fd078deec61f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/2021/9/13/2807128413487104/2815913203351552/STEM/582535e8902e4cf9a6a2b6b3e2edd0f9.png?resizew=204)
A.三棱锥![]() ![]() |
B.![]() ![]() |
C.![]() |
D.三棱锥![]() ![]() |
您最近一年使用:0次
2021-09-25更新
|
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