1 . 在四棱锥
中,
平面
,
,点M是矩形
内(含边界)的动点,且
,
,直线
与平面
所成的角为
.当三棱锥
的体积最小时,三棱锥
的外接球的表面积为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecbb2dce15f3d0fe839688575d2a8ff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790c0a17ee2d7181ee95da741694bd1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790c0a17ee2d7181ee95da741694bd1a.png)
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462次组卷
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2卷引用:陕西省西安市周至县2021届高三下学期三模理科数学试题
解题方法
2 . 如图,在正方体
中,点
在线段
上运动,有下列判断:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/2b393892-616b-4b18-948c-e236b1db6cc0.png?resizew=170)
①平面
平面
;
②
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
③异面直线
与
所成角的取值范围是
;
④三棱锥
的体积不变.
其中,正确的是__________ (把所有正确判断的序号都填上).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/2b393892-616b-4b18-948c-e236b1db6cc0.png?resizew=170)
①平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc954f644ebd405a780856f8c02cfe66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1c823e54bf3a3a7f1916a4886eb6279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
③异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ff310aabd2282b539537ebed3f788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05301d54b4ab7e88e9382bfe23ccea75.png)
④三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23e623d7180e345393af2fcde4e9c2b.png)
其中,正确的是
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解题方法
3 . 四面体ABCD中,
E为BD的中点,且∠AEC=60°,则四面体ABCD外接球的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd977d36c3ed10f5a5f567d270b9e1d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
4 . 中国古代数学著作《九章算术》中,将底面是直角三角形的直三棱柱称之为“堑堵”,将底面为矩形,一条侧棱垂直于底面的四棱锥称之为“阳马”.在如图所示的堑堵
中,
,则阳马
的外接球的体积是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac2e4804b5efbe1e32540462334f600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895ac202e3507cb633337b41299ad84b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/12/d7eb64f7-fe7b-4e46-aa58-93e3ce93902b.png?resizew=209)
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5 . 已知正方体
,过对角线
作平面
交棱
于点
,交棱CC
于点
,则:①四边形
一定是平行四边形;②多面体
与多面体
的体积相等;③四边形
在平面
内的投影一定是平行四边形;④平面
有可能垂直于平面
.其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edec6b3a624042e4295d9e709401b0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef5ea43614d815c3abb27a42dfb101b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48eee22d54bfcaeda05e119f1bd6a8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e9c83699f48959aa7fe05c18236e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef5ea43614d815c3abb27a42dfb101b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7253ffd3fc633d861810ee2e872188b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
A.①② | B.②③④ | C.①④ | D.①②④ |
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名校
6 . 已知四面体
的每个顶点都在球O(О为球心)的球面上,
为等边三角形,
,
,且
,则二面角
的正切值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a05e0ab55e325fb3b85fc8ca9c27c76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/345d6db266003b4aebea44c46c10fabe.png)
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7卷引用:陕西省西安交大附中2021-2022学年高三上学期12月月考理科数学试题
陕西省西安交大附中2021-2022学年高三上学期12月月考理科数学试题(已下线)专题8-4 立体几何中求角度、距离类型-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)(已下线)数学-2022届高三下学期开学摸底考试卷B(理科)(新课标专用)广东省2022届高三高考仿真卷一数学试题江苏省盐城中学2022-2023学年高三上学期开学质量检测数学试题(已下线)模块八 专题6 以立体几何为背景的压轴小题江苏省苏南八校2023-2024学年高一(创优班)上学期12月联考数学试卷
7 . 如图所示,三棱锥
中,
,
,
,则三棱锥
体积的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dfeaa1835689c47033f9fc21461660c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258e5d35897b172b9b56f16fbfd4b15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd61e6295200024a32adddbbb0a005a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
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7卷引用:陕西省西安市第八十五中学2021-2022学年高三上学期12月月考理科数学试题
陕西省西安市第八十五中学2021-2022学年高三上学期12月月考理科数学试题安徽省安庆市怀宁中学2021-2022学年高三上学期模拟测试(一)理科数学试题河南省南阳市2021-2022学年高三上学期期末数学(文)试题河南省南阳市2021-2022学年高三上学期期末数学(文科)试题(已下线)收官卷03--备战2022年高考数学一轮复习收官卷(新高考地区专用)(已下线)模块三 专题3 题型突破篇 小题满分挑战练(3)四川省德阳市重点高中2024届高三诊断模拟考试(二)数学(理科)试题
名校
解题方法
8 . 如图是四棱锥
的平面展开图,四边形
是矩形,
,
,
,
,
.在四棱锥
中,
( )
![](https://img.xkw.com/dksih/QBM/2021/11/2/2842695221264384/2844575737036800/STEM/76b9603efc024d0aa11b92705db1f242.png?resizew=264)
![](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/d3da6e90f9c9617cd495abb57ab9b0e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae1783f9ee7b5332fb56301c380eb0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c96f92e7510725e555dd039e1c709f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ed75e65e7374c38ffb1f75259a8beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a691f3c26155e3df0d97a0881a7b6211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/214efb2a15aef3410fc33fb5ef61ec9a.png)
![](https://img.xkw.com/dksih/QBM/2021/11/2/2842695221264384/2844575737036800/STEM/76b9603efc024d0aa11b92705db1f242.png?resizew=264)
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2021-11-05更新
|
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3卷引用:陕西省西安市西北工业大学附属中学2021-2022学年高三上学期10月联考数学理科试题
陕西省西安市西北工业大学附属中学2021-2022学年高三上学期10月联考数学理科试题山东省青岛市青岛第五十八中学2021-2022学年高三上学期期中数学试题(已下线)考点35 立体几何中的综合问题-备战2022年高考数学典型试题解读与变式
9 . 已知四面体
的所有棱长均为
,
、
分别为棱
、
的中点,
为棱
上异于
、
的动点.则下列结论中正确的结论的序号为__________ .
①线段
的长度为
;
②若点
为线段
上的动点,则无论点
与
如何运动,直线
与直线
都是异面直线;
③
的余弦值的取值范围是
;
④
周长的最小值为
.
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
①线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
②若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07505530a9ec2f9c8a23e3c9eafa313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3357a8a3ee16ea6be2c5110d75c69b11.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecfb02e157819a2bdd0f2790cbc825e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f190b17530d81d927c358ac84757a4.png)
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4卷引用:陕西省西安中学2021届高三下学期第六次模拟理科数学试题
陕西省西安中学2021届高三下学期第六次模拟理科数学试题(已下线)第33讲 立体几何中的范围与最值问题-2022年新高考数学二轮专题突破精练(已下线)考点32 异面直线所成的角-备战2022年高考数学典型试题解读与变式四川省泸州市泸县第二中学2022届高三下学期二诊模拟考试数学(理)试题
名校
10 . 如图,在平面四边形
中,
为
的中点,将
沿
折起,使得
,以
为球心,
为半径的球与三棱锥
各面交线的长度和为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/559a1c84279bb591fd5a4e5a084e8762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f207ea20f21ecde2abbfe27f4c94c6.png)
![](https://img.xkw.com/dksih/QBM/2021/6/24/2750145319600128/2752832192364544/STEM/5fb0e914-28fd-4d4c-a5e0-6aad5e6be30c.png?resizew=369)
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8卷引用:陕西省汉中市十三校2021-2022学年新高三6月摸底联考理科数学试题
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