名校
1 . 在如图所示的四棱锥
中,平面
平面
,侧面
是边长为
的正三角形,底面
为矩形,
,点
是
的中点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10e8abf8690e4b129466ddb918bcc94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4836945f324c29ef818b423bcc017a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/16b10ae9-96d8-42ef-b66b-a7cb43bce2a4.png?resizew=166)
A.![]() ![]() |
B.![]() ![]() ![]() |
C.三棱锥![]() ![]() |
D.四棱锥![]() ![]() |
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2 . 在三棱锥
中,
,
,
,平面
平面
,则三棱锥
的外接球体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13d28cb7181257cf732af4b615fc47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e70e6efce668b8f5b3e54763d71ec2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
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3 . 已知正六边形
,把四边形
沿直线
翻折,使得点
到达
且二面角
的平面角为
.若点
都在球
的表面上,点
都在球
的表面上,则球
与球
的表面积之比为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564a094212a6ae5e14bef8fec5442bdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f445775bebafcf44a927b63ad9ceaf36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a85f35fca3c1f62bd3ce3161ac20db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a592099f251048388f4789f0ee59e028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-11-26更新
|
555次组卷
|
3卷引用:河南省焦作市2023-2024学年高二上学期11月期中考试数学试题
名校
解题方法
4 . 已知四面体
的所有棱长均为2,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.![]() |
B.点![]() ![]() ![]() |
C.四面体![]() ![]() |
D.动点![]() ![]() ![]() ![]() ![]() |
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5 . 金刚石是天然存在的最硬的物质,如图1所示是组成金刚石的碳原子在空间排列的结构示意图,组成金刚石的每个碳原子,都与其相邻的4个碳原子以完全相同的方式连接.从立体几何的角度来看,可以认为4个碳原子分布在一个正四面体的四个顶点处,而中间的那个碳原子处于与这4个碳原子距离都相等的位置,如图2所示.这就是说,图2中有
,若正四面体ABCD的棱长为2,则下列结论不正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/4/aa64c841-5bb2-48c0-8d11-5914005952b3.png?resizew=345)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ea3b99368bbae2422f7709e573c176.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/4/aa64c841-5bb2-48c0-8d11-5914005952b3.png?resizew=345)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-11-11更新
|
181次组卷
|
2卷引用:河南省商丘市名校2023-2024学年高二上学期11月期中考试数学试题
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6 . 如图所示,正方体
的棱长为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b679951c971688dd19663e4ee8772e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/28/1cfe6456-b4c3-4d6c-ab80-421ddc979844.png?resizew=166)
A.![]() ![]() |
B.存在一点![]() ![]() ![]() ![]() |
C.存在一点![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() |
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2023-11-07更新
|
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|
2卷引用:河南省顶尖名校联盟2023-2024学年高二上学期期中检测数学试题
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7 . 已知圆锥
(
为圆锥的顶点,
为圆锥底面的圆心)的轴截面是等边三角形,
为底面圆周上的三点,且
为底面圆的直径,
为
的中点.若三棱锥
的外接球的表面积为
,则圆锥
的外接球的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b3a91ccf6028608cd03df7072f6536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-10-31更新
|
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解题方法
8 . 如图,
为圆锥
底面圆
的直径,点
是圆
上异于
的动点,已知
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fe724734454d994d1e74b7b8a66e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878287dcfc8c30ec0f5acad9225d2c78.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/26/f241d862-1b82-4276-ae75-f76af3ea2830.png?resizew=165)
A.圆锥![]() ![]() |
B.三棱锥![]() ![]() |
C.圆锥![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
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2023-10-24更新
|
904次组卷
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2卷引用:河南省郑州市第四十七高级中学2023-2024学年高二上学期开学考试数学试题
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解题方法
9 . 如图,在四棱锥
的平面展开图中,四边形
是边长为2的正方形,
是以
为斜边的等腰直角三角形,
,则四棱锥
外接球的球心到面
的距离为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc0be83e0611eda02c25a8ace6bf5ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/33dac120-4ef6-47f6-b772-8411002b4c37.png?resizew=174)
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10 . 正四面体的棱长为2,
是它内切球的一条弦(把球面上任意2个点之间的线段称为球的弦),
为正四面体表面上的动点,当弦
最长时,
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8eb37a4dd75318dcbd836395e575bd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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