名校
解题方法
1 . 在平面四边形
中,
,
,且
,
,现沿着
把
折起,使点
到达点P的位置,且
,则三棱锥
体积的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5f58d0919b618868df14add12c59ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636af20ea241c68db2df0c9b87ff39e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71e6ea7333dbc78d0a7b9bc3892f940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2899e607479d8d1c47d954ae9ebb7144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
您最近一年使用:0次
2022-05-31更新
|
826次组卷
|
4卷引用:安徽省合肥市第六中学2022届高三下学期高考前诊断暨预测理科数学试题
安徽省合肥市第六中学2022届高三下学期高考前诊断暨预测理科数学试题(已下线)专题07 立体几何(文理)江苏省南京市第十三中学2022-2023学年高三上学期期末数学试题(已下线)模块六 立体几何 大招6 运动中找不变量
2 . 如图,在四棱锥
中,底面
是边长为1的正方形,
底面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/c11cff88-3db6-4c9c-b63b-8e3d2365c4e9.png?resizew=166)
(1)证明:平面
平面
;
(2)点M在平面
内,直线
平面
,求四棱锥
的体积.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/c11cff88-3db6-4c9c-b63b-8e3d2365c4e9.png?resizew=166)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)点M在平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0edb1508fc95765f3bb316bcb5252d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4117625867a74cd022584500c76deca.png)
您最近一年使用:0次
2022-05-31更新
|
587次组卷
|
3卷引用:安徽省合肥一六八中学2022届高三下学期5月最后一卷文科数学试题
名校
解题方法
3 . 如图,菱形ABCD中
,把△BDC沿BD折起,使得点C至P处.
![](https://img.xkw.com/dksih/QBM/2022/5/28/2989280741318656/2991060941152256/STEM/c24590ae-e996-4624-b82c-60d32d8803e3.png?resizew=567)
(1)证明:平面PAC⊥平面ABCD;
(2)若
与平面ABD所成角的余弦值为
,
,求三棱锥P—ABD的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6906f59d09ce31956d6f5ea2b23fc77.png)
![](https://img.xkw.com/dksih/QBM/2022/5/28/2989280741318656/2991060941152256/STEM/c24590ae-e996-4624-b82c-60d32d8803e3.png?resizew=567)
(1)证明:平面PAC⊥平面ABCD;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
您最近一年使用:0次
名校
解题方法
4 . 已知三棱锥
的外接球O的半径为
,
为等边三角形,若顶点P到底面ABC的距离为4,且三棱锥
的体积为4
,则满足上述条件的顶点P的轨迹长度是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50690dab38f4512eb72e18b7f86cf6f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
您最近一年使用:0次
解题方法
5 . 如图,已知长方体
中,
,点E是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/3e427fbb-8821-419b-8a55-be0736d6b9aa.png?resizew=205)
(1)求证:
平面
;
(2)求点E到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9662bb2fa5e9f9a2958c5c628f5a51b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554b3b4c5ce7aca81becc07ed4903736.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/3e427fbb-8821-419b-8a55-be0736d6b9aa.png?resizew=205)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b7bfc1d0b50681765bd3fa6d5920ed8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
(2)求点E到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc78a86b12ba0b4553135a3a635fc418.png)
您最近一年使用:0次
2022-05-29更新
|
806次组卷
|
2卷引用:安徽省合肥市肥东县综合高中2021-2022学年高一下学期5月月考数学试题
名校
解题方法
6 . 如图,正四棱柱
满足
,点E在线段
上移动,F点在线段
上移动,并且满足
.则下列结论中正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/5/25/2987202003886080/2988498980544512/STEM/d8380ad5-5c17-4fba-9ae3-78a793969574.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0dd04b65278f96a9970a3f039b468d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df324441821dc5523bdd4ebf6903010c.png)
![](https://img.xkw.com/dksih/QBM/2022/5/25/2987202003886080/2988498980544512/STEM/d8380ad5-5c17-4fba-9ae3-78a793969574.png?resizew=146)
A.直线![]() ![]() |
B.直线![]() ![]() |
C.三角形![]() |
D.三棱锥![]() |
您最近一年使用:0次
2022-05-27更新
|
511次组卷
|
2卷引用:安徽省六安第一中学2021-2022学年高一下学期期中数学试题
名校
解题方法
7 . 如图,在四面体
中,
平面
,
,
,
是线段
上一点,且
.
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986302609563648/2986954743070720/STEM/c9d77646-82ba-4f04-b44b-836ae28b73f3.png?resizew=192)
(1)证明:
是
的中点;
(2)若
,
,求几何体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec5326494ecdd0d35b8532d04b0a675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9e0b3123756c052c68976fdf0290f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b182ff664d8ed9d0c518dbbf98ef10f.png)
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986302609563648/2986954743070720/STEM/c9d77646-82ba-4f04-b44b-836ae28b73f3.png?resizew=192)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ad8d16722f5b9e7fd2602f14d5ffbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0073dd9894477dc79b90b950d096ca0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/214a2b799c34667ee8d673768a18399f.png)
您最近一年使用:0次
名校
8 . 如图,点
是正方体
中的侧面
内(包括边界)的一个动点,则下列命题正确的是___________ (请填上所有正确命题的序号).
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986302609563648/2986954742718464/STEM/597acaaff6df45ed9f2ad1c6c428dbb7.png?resizew=144)
①满足
的点
的轨迹是一条线段;
②在线段
上存在点
,使异面直线
与
所成的角是
;
③若正方体的棱长为1,三棱锥
的体积最大值为
;
④存在无数个点
,使得点
到直线
和直线
的距离相等.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986302609563648/2986954742718464/STEM/597acaaff6df45ed9f2ad1c6c428dbb7.png?resizew=144)
①满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e332ebf1ba3cdae6d074874a0f67c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
②在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e884ca9429486026caa5e2310b0e4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
③若正方体的棱长为1,三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21133ef66f0f75c3de70c1a1b697055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
④存在无数个点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
您最近一年使用:0次
名校
解题方法
9 . 已知两平行平面
、
间的距离为
,点
,点
,且
,若异面直线
与
所成角为
,则四面体
的体积为____________ .
![](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/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84abdc67526dce4abec10b5a114c02d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12712eb5c3454f89665e002a1784d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8465a3f2e1a2b52a19075d84cda771.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/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2022-05-24更新
|
372次组卷
|
3卷引用:安徽省合肥市肥东县综合高中2021-2022学年高一下学期5月月考数学试题
10 . 如图,在正方体
中,
,
,
分别为
,
的中点,
,
分别为棱
,
上的动点,则三棱锥
的体积( )
![](https://img.xkw.com/dksih/QBM/2022/5/20/2983441716813824/2985649909800960/STEM/fa2134f2-39e9-4086-98e1-0b5dca739882.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.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/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2029a66082b66be765617cdee4f307f1.png)
![](https://img.xkw.com/dksih/QBM/2022/5/20/2983441716813824/2985649909800960/STEM/fa2134f2-39e9-4086-98e1-0b5dca739882.png?resizew=157)
A.存在最大值,最大值为![]() | B.存在最小值,最小值为![]() |
C.为定值![]() | D.不确定,与![]() ![]() |
您最近一年使用:0次
2022-05-23更新
|
2388次组卷
|
9卷引用:安徽省芜湖市华星学校2022-2023学年高二上学期入学考试数学试题
安徽省芜湖市华星学校2022-2023学年高二上学期入学考试数学试题河南省实验中学2021-2022学年高一下学期期期中考试数学试题广东省茂名市电白区2021-2022学年高一下学期期末数学试题(已下线)专题23 立体几何中的压轴小题-1四川省资中县第二中学2022-2023学年高二上学期10月月考理科数学试题(已下线)专题07 立体几何小题常考全归类(精讲精练)-1福建省将乐县第一中学2022-2023学年高一下学期第三次月考数学试题(已下线)重难点突破05 立体几何中的常考压轴小题(七大题型)-1(已下线)专题14 立体几何常见压轴小题全归纳(9大核心考点)(讲义)