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1 . 半正多面体亦称“阿基米德多面体”,是由边数不全相同的正多边形围成的多面体,体现了数学的对称美.二十四等边体就是一种半正多面体,是由正方体切截而成的,它由八个正三角形和六个正方形围成 (如图所示),若它所有棱的长都为2,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/97c215cc-dd81-4e39-a7b7-d588d61cb2b1.png?resizew=175)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/97c215cc-dd81-4e39-a7b7-d588d61cb2b1.png?resizew=175)
A.![]() ![]() |
B.该二十四等边体的体积为![]() |
C.![]() ![]() ![]() |
D.该二十四等边体的外接球的表面积为![]() |
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2022-09-26更新
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3卷引用:安徽师范大学附属中学2022-2023学年高二上学期入学考试数学试题
2 . 已知
是两条不同的直线,
,
是两个不同的平面,则下列说法不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae3baf17b5481b4318da34a543675852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() ![]() |
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2022-09-09更新
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2卷引用:辽宁省营口地区2022-2023学年高二上学期开学考试数学试题
3 . 如图,在棱长为a的正方体
中,点P在侧面
(包含边界)内运动,则下列结论正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/04db9453-4a29-4de1-b907-2e528e71b37b.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/04db9453-4a29-4de1-b907-2e528e71b37b.png?resizew=169)
A.直线![]() ![]() |
B.二面角![]() ![]() |
C.过三点![]() ![]() |
D.三棱锥![]() ![]() |
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3卷引用:广东省佛山市顺德区华侨中学2022-2023学年高二上学期10月月考数学试题
名校
解题方法
4 . 如图,等边三角形ABC的中线AF与中位线DE相交于G,已知
是
绕DE旋转过程中的一个图形,下列命题中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/8872722a-5dc9-4604-ab1f-9be817811caa.png?resizew=207)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a49088d8f4cae827c70a903191f7a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/8872722a-5dc9-4604-ab1f-9be817811caa.png?resizew=207)
A.动点![]() |
B.恒有![]() ![]() |
C.三棱锥![]() |
D.异面直线![]() |
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解题方法
5 . 如图,在四棱锥
中,底面
为正方形,顶点
在底面
的射影为底面中心
,
,
,
分别是
,
,
的中点,动点
在线段
上运动,则下列四个结论中恒成立的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/ea15e638-5839-48d0-8915-af1e0f2a1ab6.png?resizew=201)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/ea15e638-5839-48d0-8915-af1e0f2a1ab6.png?resizew=201)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
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2022-08-19更新
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2卷引用:山东省高密市第三中学(创新学院)2022-2023学年高二上学期开学检测数学试题
6 . 如图,点P在正方体
的面对角线
上运动,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/31/ffb831b2-c525-44e9-94d7-1b32dd07e098.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/31/ffb831b2-c525-44e9-94d7-1b32dd07e098.png?resizew=169)
A.三棱锥![]() | B.![]() ![]() |
C.![]() | D.平面![]() ![]() |
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7 . 如图,设E,F分别是长方体
的棱CD上的两个动点,点E在点F的左边,且满足
,有下列结论:( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/21/d5f0b1de-7aeb-45f6-9e1f-358403232564.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366e62778cd38f62e722b73d8cb9a542.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/21/d5f0b1de-7aeb-45f6-9e1f-358403232564.png?resizew=160)
A.![]() ![]() |
B.三棱锥![]() |
C.![]() ![]() |
D.平面![]() ![]() |
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2022-07-14更新
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2卷引用:福建省山海联盟校教学协作体2021-2022学年高二下学期期末考试数学试题
8 . 已知三个不同的平面
,
,
和三条不同的直线
,
,
,下列命题中为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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3卷引用:河北省邢台市南和区第一中学2022-2023学年高二上学期开学考试数学试题
9 . 正方形
,的棱长为1,
,
分别为
,
的中点,下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
A.直线![]() ![]() |
B.平面![]() ![]() |
C.在线段![]() ![]() ![]() ![]() |
D.在棱![]() ![]() ![]() ![]() ![]() |
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10 . 设
、
是两条不同的直线,
、
是两个不同的平面,下列说法错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() | D.若![]() ![]() ![]() |
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4卷引用:2022年6月湖北省普通高中学业水平合格性模拟考试数学试题