名校
解题方法
1 . 已知四棱锥
的底面
是矩形,其中
,平面
平面
,
为等边三角形,则四棱锥
的外接球体积为( )
![](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/8716b5aad93d97ca1c3791b9c717cc0d.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/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-07-05更新
|
199次组卷
|
2卷引用:河南省许昌市2022-2023学年高二下学期期末数学试题
名校
解题方法
2 . 如图,在四棱锥
中,
平面
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
平面
,底面
为矩形,点
在棱
上,且
与
位于平面
的两侧.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/3bb6f445-bcb3-4ca1-9d3f-a3405aaf77e1.png?resizew=206)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
平面
;
(2)若
,
,
,试问在线段
上是否存在点
,使得
与
的面积相等?若存在,求
到
的距离;若不存在,说明理由.
![](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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/3bb6f445-bcb3-4ca1-9d3f-a3405aaf77e1.png?resizew=206)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985d0ad3196bf9d13baced16572fbf95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6370d6c626bdabf1fc694501ee6c714f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fb6e81fee5674c3e26a65e58cc506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
2023-01-30更新
|
1204次组卷
|
3卷引用:河南省开封市2022-2023学年高三上学期1月期末联考数学试题(文科)
河南省开封市2022-2023学年高三上学期1月期末联考数学试题(文科)重庆市第一中学教育共同体2022-2023学年高一下学期期中数学试题(已下线)第03讲 空间中平行、垂直问题10种常见考法归类(1)
解题方法
3 . 如图,已知
是正三角形,
、
都垂直于平面
,且
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2022/7/12/3020865902657536/3024061129170944/STEM/153f37ea158e410f9f867a5ac46b54d9.png?resizew=127)
(1)求证:
平面
;
(2)求证:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84427d1060a50556a161c8d7a1b5f4f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/2022/7/12/3020865902657536/3024061129170944/STEM/153f37ea158e410f9f867a5ac46b54d9.png?resizew=127)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b9c913de19bd5d9a0a67d88ff1371f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3547a914468b082d8d8741b974a03190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62871bb0dff211fc3bd80f9066c25b29.png)
您最近一年使用:0次
名校
解题方法
4 . 在正三棱柱
中,点P满足
,其中
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358b1b3cc7219e18bfdd1a70b3de609b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3c2b83189d5b99fd82596824311035.png)
A.![]() ![]() | B.![]() ![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-07-15更新
|
337次组卷
|
5卷引用:河南省信阳市宋基信阳实验中学2023-2024学年高二上学期期末复习数学测评卷(五)
解题方法
5 . 下列四个命题中不 正确的是( )
A.平行线段在直观图中仍然平行 | B.相等的角在直观图中仍然相等 |
C.直线与平面相交有且只有一个公共点 | D.垂直于同一个平面的两条直线平行 |
您最近一年使用:0次
2022-07-05更新
|
228次组卷
|
2卷引用:河南省许昌市2021-2022学年高一下学期期末数学理科试题
名校
6 . 有下列四个命题:
:两两相交且不过同一点的三条直线必在同一平面内;
:若空间两条直线不相交,则这两条直线平行;
:若直线
平面
,直线
平面
,则
;
:若直线
平面
,直线
平面
,则
.其中为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b21b872313f7d8c5b606981f954a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e0019e49f673a3b11a4259ce3c9a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f979a27d3a09a17445561091e6655eb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb26a220ed44c446105df7caa0f1063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc119550ce4fc5f3d1daf996e7243bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e0019e49f673a3b11a4259ce3c9a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1454c1c17931d258c0a8d30a4417d30e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354bb54738c66f16e4df22a531556feb.png)
A.![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2021-12-22更新
|
309次组卷
|
2卷引用:河南省2022届高三上学期期末模拟数学(理)试题(六)
名校
7 . 设
是两平面,
是两直线.下列说法正确的个数是( )
①若
,则
②若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72fbc714c63815dad9a27418f6492f16.png)
③若
,则
④若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f345365fe0a1986b80299f7a99a306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7638a1d2935244c8436986a8d0ca95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289f5bc5fc3b73b5fb509109da0d6cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d358cf7056c63b5c7f7b47df96271c9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72fbc714c63815dad9a27418f6492f16.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebb6975c444d80499a803b5c0ddb4866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f747152f006301e03b643afb80195c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b05192a74382e5b2a7c6c3842100d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f345365fe0a1986b80299f7a99a306.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2021-08-10更新
|
857次组卷
|
2卷引用:河南省新乡市第一中学2021-2022学年高一下学期期末数学试题
8 . 已知矩形
中,
,沿对角线
将三角形
折起,使得点
在平面
上的射影在线段
上,此时
的值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73ba94cec6c03980be9ca03774379fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf2d39a965604b748811d9dff1cfdb8.png)
您最近一年使用:0次
解题方法
9 . 如图,在四棱锥
中,
,
,
平面ABCD,
,
,E是棱PC上一点,F是AB的中点.
![](https://img.xkw.com/dksih/QBM/2020/2/12/2396995880517632/2398644831797248/STEM/e2723182303e4fa6a822843cdf9aba9e.png?resizew=128)
(1)证明:
平面ADE;
(2)若
,O为点E在平面PAB上的正投影,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4bc1ea8755c18d5c206640b5311acb1.png)
![](https://img.xkw.com/dksih/QBM/2020/2/12/2396995880517632/2398644831797248/STEM/e2723182303e4fa6a822843cdf9aba9e.png?resizew=128)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94270844f197d524bf1da4f1385befd2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a15e9285ea086558910c16a5127ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fded694d5e009f2787724505a8c5b418.png)
您最近一年使用:0次
2020-02-14更新
|
298次组卷
|
2卷引用:河南省鹤壁市2019-2020学年高一上学期期末数学试题
名校
10 . 在正方体
中,点
是四边形
的中心,关于直线
,下列说法正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc526324e78e4d9226d1b537f27845a.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2019-09-19更新
|
1825次组卷
|
12卷引用:河南省濮阳市2019-2020学年高一上学期期末数学试题
河南省濮阳市2019-2020学年高一上学期期末数学试题【市级联考】广东省汕头市2019年普通高考第一次模拟考试数学理试题【市级联考】广东省汕头市2019届高三第一次模拟考试文科数学试题新疆伊犁哈萨克自治州奎屯市第一高级中学2018-2019学年高二下学期第二次月考数学(理)试题天津市和平区第一中学2018-2019学年高一下学期期中数学试题1广东省广雅中学、执信、六中、深外四校2020届高三8月开学联考数学文试题天津市和平区第一中学2018-2019学年高一下学期期中数学试题2(已下线)专题8.3 空间点、直线、平面之间的位置关系(练)-浙江版《2020年高考一轮复习讲练测》2020届广东省佛山市禅城区高三上学期统一调研测试(二)数学(文)试题(已下线)专题24 平行与垂直的判定与性质-冲刺2020高考跳出题海之高三数学模拟试题精中选萃新疆昌吉市第九中学2021届高三上学期开学考试数学(理)试题(已下线)专题8.3 空间点、直线、平面之间的位置关系(练)-2021年新高考数学一轮复习讲练测