解题方法
1 . 底面为正方形,顶点在底面的射影为底面的中心的棱锥叫正四棱锥,由正四棱锥截得的棱台叫正四棱台.已知正四棱台
的上底
和下底
分别是边长为
、
的正方形,高(上下底面的距离)为4,四条侧棱
、
、
、
都相等且延长线交于一点
,则以下说法正确的有( )
①侧棱
与下底面边长
所在直线是异面直线,且所成角的正切值为
;
②该正四棱台的斜高(侧面等腰梯形的高)为
;
③平面
与平面
相交,设交线为
,则
,且
;
④该正四棱台的外接球的表面积为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2fdf1944afebb51cb6a5e6c74aadd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①侧棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
②该正四棱台的斜高(侧面等腰梯形的高)为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2fdf1944afebb51cb6a5e6c74aadd.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b76843381162198a14f2faf5e2518b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b959950252b1e0b6ea8b67cdf72b740e.png)
④该正四棱台的外接球的表面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5226edfda3a65a5c87938ddace14e3aa.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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解题方法
2 . 如图是常见的一种灭火器消防箱,抽象成数学模型为如图所示的六面体,其中四边形
和
为直角梯形,
,
为直角顶点,其他四个面均为矩形,
,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/f9dfe358-4ff2-4c3c-8ab2-4d383529eb66.png?resizew=122)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/c2d50bc8-639f-43b3-9983-9c238e3cc18a.png?resizew=134)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6895631698282a5e8887a09177cc98a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60c3b75ff1610956dfe9a9cd7692d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65436512ecbaefba4ac8123c55094211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc380e172eb78d4544feedaa016b927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b0a17db81cc3c3d0c65a45483079fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/f9dfe358-4ff2-4c3c-8ab2-4d383529eb66.png?resizew=122)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/c2d50bc8-639f-43b3-9983-9c238e3cc18a.png?resizew=134)
A.该几何体是四棱台 |
B.![]() |
C.![]() |
D.平面![]() ![]() ![]() |
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2022-12-11更新
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2卷引用:湖南师范大学附属中学2022-2023学年高二上学期第二次大练习数学试题
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解题方法
3 . 如图,在正四棱台
中,点
,
分别是棱
,
的中点,
,则下列判断错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/2ea7044d-0969-4eff-b0d3-8658fcab1899.png?resizew=206)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c0a06a56ad5be6b3773c48daa7f7e0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/2ea7044d-0969-4eff-b0d3-8658fcab1899.png?resizew=206)
A.![]() ![]() ![]() ![]() | B.![]() ![]() |
C.![]() ![]() ![]() | D.![]() ![]() |
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3卷引用:湖南省长沙市长郡中学2022-2023学年高二上学期第二次模块检测数学试题
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名校
解题方法
4 . 如图,正四棱台
中,点E,F,G分别是棱
的中点,则下列判断中,正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/3b5e38f7-62d1-499c-824d-7f85c972afc8.png?resizew=219)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107d20c0639621f618f2f21e2a00680c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/3b5e38f7-62d1-499c-824d-7f85c972afc8.png?resizew=219)
A.B,D,E,G共面 | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
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5 . 设台体上、下底面面积分别为
和
,上、下底面的距离为h,试用
,
和h表示棱台的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150a135bbd528daf3f19a58a621a57c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150a135bbd528daf3f19a58a621a57c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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解题方法
6 . 在正四棱台
中,上、下底面边长分别为
,侧棱长为
,则该正四棱台的外接球的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72545bef56c4e32d1b76489bd32c3842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab94fa7ac2f64dc49541c84d3432bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7881094ce2f907c3aaf664318ecd3e2d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 下列命题正确的是( )
A.将棱台的侧棱延长后必交于一点 | B.绕直角三角形的一边旋转一周得到的几何体是圆锥 |
C.若一个球的表面积扩大一倍,则该球的体积扩大![]() | D.在棱长为1的正方体![]() ![]() ![]() |
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广东省深圳市罗湖外国语中学2021-2022学年高一下学期期中数学试卷(已下线)8.3.2 圆柱、圆锥、圆台、球表面积和体积(分层作业)-【上好课】2022-2023学年高一数学同步备课系列(人教A版2019必修第二册)(已下线)高一下学期期中数学考试模拟卷02-2022-2023学年高一数学下学期期中期末考点大串讲(人教A版2019必修第二册)(已下线)核心考点05简单几何体的表面积与体积-【满分全攻略】2022-2023学年高一数学下学期核心考点+重难点讲练与测试(人教A版2019必修第二册)福建省南平市建阳第二中学2024届高三上学期第二次月考数学试题广东省东莞市嘉荣外国语学校2023-2024学年高二上学期期中数学试题
名校
解题方法
8 . 如图,已知正四棱台
的上、下底面边长分别为
,
,其顶点都在同一球面上,且该球的表面积为
,则侧棱长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/17/7c92016e-e216-42c2-98f8-de3f480f20d6.png?resizew=203)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1a3983cf4ab1812c6f05d80fa29ab18.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/17/7c92016e-e216-42c2-98f8-de3f480f20d6.png?resizew=203)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:浙江省十校联盟2022-2023学年高三上学期10月联考数学试题
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解题方法
9 . 如图所示,直四棱柱
的底面
为梯形,
,
,过
三点的平面记为
,
与
的交点为Q,给出以下四个结论:①
;②几何体
是三棱台;③
;④四棱柱被平面
分成的上下两部分的体积相等.
其中正确的个数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/62ca5e02-25e7-402a-9f57-e6f6d8a7b92d.png?resizew=156)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4575a365b8e619654a7327d216f23783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0dfa9d9e982eafd09e850cfdaeea2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d697fcd8211bcca72ee8b9b485cfd9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbb785ed15b32aa8e90c5145375567f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0e16ba55163bfabad032129179b51b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
其中正确的个数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/62ca5e02-25e7-402a-9f57-e6f6d8a7b92d.png?resizew=156)
A.1 | B.2 | C.3 | D.4 |
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解题方法
10 . 已知直角梯形
,其中
,
,
,且
、
分别是
、
的中点,将梯形
沿
翻折,并连接
、
形成如下图的几何体
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/32310087-7727-4c91-a4b8-0f0ec10d091a.png?resizew=363)
(1)判断几何体
是哪种简单几何体,并证明;
(2)若二面角
的大小为
,求直线
与平面
的夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8ef58be8708144272538ee427fb92c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5919f58fcb3b846c529b09225d0cb099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e949b2a04e2d6231f7f24ee5e268b9b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/32310087-7727-4c91-a4b8-0f0ec10d091a.png?resizew=363)
(1)判断几何体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e949b2a04e2d6231f7f24ee5e268b9b.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0e5c6e11ce0976b4e599e741ddfc68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf126cfed85fa9b7720ec6f7b0008dc.png)
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