名校
解题方法
1 . 如图,若正方体的棱长为2,点
是正方体
的底面
上的一个动点(含边界),
是棱
的中点,则下列结论中正确结论的序号是_____ .
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/a070de74-2264-49dd-a14f-2417d788ec80.png?resizew=150)
①若保持
,则点
在底面
内运动路径的长度为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf77fb99faef2e0ace04dbb972eb74f.png)
②三棱锥
体积的最大值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
③若
,则二面角
的余弦值的最大值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83303d3784492506fc44f2b4d6b07bc1.png)
④若
则
与
所成角的余弦值的最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/a070de74-2264-49dd-a14f-2417d788ec80.png?resizew=150)
①若保持
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34e4d3146f60306eb2da3dcaebda675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf77fb99faef2e0ace04dbb972eb74f.png)
②三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b42aa5c841d17cbd3ca982f4ba27a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dbdf8648ebbc56720ec14fd91159906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39eefa58485e43a86a1931a2aa7222a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83303d3784492506fc44f2b4d6b07bc1.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4064ef418c6d627f2081071b06d883d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,
的二面角的棱上有
,
两点,直线
,
分别在这个二面角的两个半平面内,且都垂直于
.已知
,则
长度为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd40fa72911ae508ef169ddf4fb640dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2023/12/6/3383501951713280/3383563381473280/STEM/7d915a3d0255452aac4b3940b15615a2.png?resizew=136)
您最近一年使用:0次
2023-12-06更新
|
567次组卷
|
17卷引用:四川省泸县第一中学2020-2021学年高二上学期第一次月考数学(理)试题
四川省泸县第一中学2020-2021学年高二上学期第一次月考数学(理)试题山东省济宁市2016-2017学年高二下学期期末考试理数试题山东省曲阜师范大学附属中学2016-2017学年高二下学期期末考试数学(理)试题【全国百强校】安徽省淮北市第一中学2018-2019学年高二下学期第二次月考数学(理)试题湖南省常德市2019-2020学年高二上学期期末数学试题湖北省沙市中学、郧阳中学、恩施高中、随州二中2019-2020学年高二上学期第三次月考数学试题福建省尤溪县2018-2019学年普通高中高二上学期半期数学(理)试题湖北省黄冈市黄梅国际育才高级中学2019-2020学年高二上学期9月月考数学试题河北省石家庄市四中2021-2022学年高二上学期第一次月考数学试题福建省将乐县第一中学2021-2022学年高二上学期第一次月考数学试题内蒙古霍林郭勒市第一中学2021-2022学年高二上学期期中考试数学(理科)试题河南省平顶山市郏县第一高级中学2021-2022学年高二下学期开学收心考试数学(理)试题陕西省咸阳市实验中学2023-2024学年高二上学期第二次月考数学试题(已下线)专题 01 空间基底及综合应用(2)(已下线)专题 01 空间基底及综合应用(2)河南省南阳市唐河县2023-2024学年高二上学期期末质量检测数学试题(已下线)第14讲 8.6.3平面与平面垂直(第1课时 )-【帮课堂】(人教A版2019必修第二册)
3 . 如图,已知在棱长为2的正方体
中,点E,F,H分别是
,
,
的中点,点G是
上的动点,下列结论中正确的有________________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/cf1e3d64-9f44-4305-9b4d-4d194ea209e0.png?resizew=138)
①
平面ABH ②
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319ad7c7bdb5c5cfa477eb4f5ea57d2b.png)
③直线EF与
所成的角为
④三棱锥
的体积最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/cf1e3d64-9f44-4305-9b4d-4d194ea209e0.png?resizew=138)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cae8fd28341fc24851e03e9ba1d4e09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319ad7c7bdb5c5cfa477eb4f5ea57d2b.png)
③直线EF与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996bf3d35b6763cbc1a423b13a9df2dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50c9299f4c44108e7808d6270fe6f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a391005600bdd69c96750589f9adb048.png)
您最近一年使用:0次
4 . 如图1,在矩形ABCD中,
,E为AB的中点,将
沿DE折起,点A折起后的位置记为点
,得到四棱锥
,M为
的中点,如图2.某同学在探究翻折过程中线面位置关系时,得到下列四个结论:
;
②异面直线
所成角的正切值为2;
③存在某个位置,使得 平面
平面
.
④三棱锥
的体积的最大值为
;
其中所有正确结论的序号是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db2b1c641b93caae9b7a82441e4ba70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/371e9c541c4eeecf91967ceb24d77c9c.png)
②异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d27f63a4a2e058b302674c086d5085.png)
③存在某个位置,使得 平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b3e7c7845a0ec3cbac709fda131764.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
④三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d5cf6415cc66f3617f330f28ae09fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b9f96b8ecc3cb000bb2f030809f225.png)
其中所有正确结论的序号是
您最近一年使用:0次
2023-09-06更新
|
471次组卷
|
3卷引用:四川省叙永第一中学校2024届高三上学期一诊数学(理科)试题
解题方法
5 . 在直三棱柱
中,
,
,四棱锥
体积为
,则直三棱柱
的外接球的体积为____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b5572c47e668b91304867b9988c7a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29a0c82028e1259f300facd32775a15e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/15/b830fa26-d3db-40b2-810d-f889ed2a3b98.png?resizew=122)
您最近一年使用:0次
名校
6 . 如图,三棱锥
中,平面
平面BCD,
是边长为2的等边三角形,
,
.若A,B,C,D四点在某个球面上,则该球体的表面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17580410bf63dba4fe164265afaac4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532aece6cfd67e2a97977eed978dbf2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bcf905f3910d9238a44ef647835b3d1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/7/c03902f3-ab7a-4d90-bd96-ec522c38bae4.png?resizew=200)
您最近一年使用:0次
2023-07-05更新
|
864次组卷
|
7卷引用:四川省泸县第一中学2023-2024学年高二上学期开学考试数学试题
7 . 在正三棱柱
中,
,空间中的点P满足
,其中
.下列命题中,真命题有______ (填所有真命题的序号).
①当m=0时,
;②当
时,平面
平面
;③当m=1时,直线AP与直线BC所成角的余弦值为
;④对
,三棱锥
的体积是定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92105835f8075cb75dff244e908370b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fabc69a21cd6a75ded4c926985a8196b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ea0512a1e43e7167ac1d2225b560cd.png)
①当m=0时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d86c2947213ad51595cfe30e13739a4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8493a0cd10d3d0399173c04163740a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c1baaa912fedaaf6670730bfad1de32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d374b1df11455ee6b79889088fe525.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a849e72b73caf0d376641471151986.png)
您最近一年使用:0次
2023-05-08更新
|
264次组卷
|
2卷引用:四川省泸州市2023届高三三摸文科数学试题
名校
8 . 如图,已知正方体
的棱长为2,点E是
内(包括边界)的动点,则下列结论中正确的序号是________ (填所有正确结论的序号)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/7e11cc65-4391-4ccf-a3fb-a5d662976513.png?resizew=170)
①若
,
,则
平面
;
②若平面
与正方体各个面都相交,且
,则截面多边形的周长一定为
;
③若
的角平分线交AB于点F,且
,则动点E的轨迹长为
;
④直线
与平面
所成的角的余弦值的最大值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/7e11cc65-4391-4ccf-a3fb-a5d662976513.png?resizew=170)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a64f1d0b5e4a6ebf4405b98a21a1ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb6bf23a5a12e1ba5413594d7b1a57c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e44edb46eb17d224e0d9a2667c2e5df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
②若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77bc6a7e1ace458b04b99247bca0accd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec978eb43bc4f9e7df83b0d0195dcda.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a55a1a244f81097e05e715b69580faa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f31a3724c639f88486f8356ca65397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06beac41f26a7735bbeff2e7df52f51d.png)
④直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
您最近一年使用:0次
2023-04-25更新
|
445次组卷
|
2卷引用:四川省泸县第五中学2023届高考适应性考试数学(理)试题
名校
解题方法
9 . 如图,在长方体
中,底面
为正方形,E,F分别为
,CD的中点,点G是棱
上靠近
的三等分点,直线BE与平面
所成角为
.给出以下4个结论:
平面
; ②
;
③平面
平面
; ④B,E,F,G四点共面.
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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca871e5520b69dada15eca7faa423b2b.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/557e120c066e17ba3eee00410cbed573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c1acd7da8817385417e1dff25bfe25.png)
其中,所有正确结论的序号为
您最近一年使用:0次
2022-12-30更新
|
1785次组卷
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9卷引用:四川省泸县第一中学2023届高三二诊模拟考试数学(文)试题
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解题方法
10 . 在三棱锥
中,平面
平面
,
与
都是边长为6的正三角形,则该三棱锥的外接球的体积为________ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
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