名校
1 . 如图所示,正方形
与梯形
所在的平面互相垂直,已知
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/662cf6ff-1732-4238-953f-0b4a263eeba5.png?resizew=192)
(1)求证:
平面
;
(2)求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c9773e77146de880f1204dd9ef4593.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/662cf6ff-1732-4238-953f-0b4a263eeba5.png?resizew=192)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d32e76582bf550593fdef53e081225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
您最近一年使用:0次
2022-04-10更新
|
523次组卷
|
2卷引用:云南省昆明市第十中学2021-2022学年高二3月月考数学试题
名校
2 . 如图1,在等腰梯形
中,
分别是
的中点,
,
,将
沿着
折起,使得点
与点
重合,平面
平面
,如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/e0ad0bd0-a3b8-4436-b03a-f5a69d2a5de6.png?resizew=357)
(1)当
时,证明:
平面
;
(2)若平面
与平面
夹角的余弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54eb01dd383cde273a69b863f96528e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b85dbac306107b711eaa66690330b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1016eca2e30c6c75ff2b6bdd63f7ea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac48b9ac8efbf41d6ab5242d247bd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/e0ad0bd0-a3b8-4436-b03a-f5a69d2a5de6.png?resizew=357)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2597b5554284e275367c25529c6750f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8be7470f11eed5536f3baf65e3a125d.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8be7470f11eed5536f3baf65e3a125d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83fb9ac8a18e78a4c56da79514b5ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2022-12-14更新
|
213次组卷
|
2卷引用:河北省邯郸市涉县第一中学2023届高三上学期期中数学试题
名校
3 . 如图,四边形
是矩形,
平面
,
平面
,
,
,点
在棱
上.
(1)求证:
平面
;
(2)求二面角
的余弦值;
(3)若点
到平面
的距离为
,求线段
的长.
![](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/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075773e1b843a2f6c7edcecbf8e9a497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9bd628837add19267c186fbff246076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/8/29cdd0c1-8412-4450-a12e-08cf805e2972.png?resizew=149)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43842d64562c42f0bc6c37a86eed13ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082a5fe72b478d8628b2f20d31fe7b6a.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9068f29d671d76d1e95ba3a4eaff5b96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
您最近一年使用:0次
2022-04-07更新
|
1547次组卷
|
4卷引用:北京市西城区2022届高三一模数学试题
北京市西城区2022届高三一模数学试题(已下线)临考押题卷01-2022年高考数学临考押题卷(北京卷)北京市第五十五中学2023届高三上学期10月月考数学试题北京市陈经纶中学2023-2024学年高二上学期开学检测数学试题
解题方法
4 . 如图,在三棱柱
中,
,D为
中点,四边形
为正方形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/b3b86a94-a34a-40e1-9b61-a2f824c39653.png?resizew=145)
(1)求证:
平面
;
(2)再从条件①、条件②这两个条件中选择一个作为已知,求直线
与平面
所成角的正弦值.
条件①:
;
条件②:
.
注:如果选择条件①和条件②分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19313eda8aed25d59b3a1c59a3117634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/b3b86a94-a34a-40e1-9b61-a2f824c39653.png?resizew=145)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/547a4b438e2e6687c7cd55ea08bbaae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
(2)再从条件①、条件②这两个条件中选择一个作为已知,求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7870cee007535b979d35bc7feab75616.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eabd2314dbe8bf1ef6e37a7befbb0c61.png)
注:如果选择条件①和条件②分别解答,按第一个解答计分.
您最近一年使用:0次
2022高三·全国·专题练习
解题方法
5 . 如图,四边形ABCD为矩形,四边形BCEF为直角梯形,BF//CE,BF⊥BC,
,BF=2,AB=1,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/35b5f1b4-4210-4d96-9695-67e21cc7faf4.png?resizew=186)
(1)求证:BC⊥AF;
(2)求证:AF//平面DCE;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d484a2c136cba0fce8ed70a9420e17c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e530783dc49238736ed5c1157e6184dd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/35b5f1b4-4210-4d96-9695-67e21cc7faf4.png?resizew=186)
(1)求证:BC⊥AF;
(2)求证:AF//平面DCE;
您最近一年使用:0次
2022高三·全国·专题练习
解题方法
6 . 如图为一个组合体,其底面ABCD为正方形,PD⊥平面ABCD,EC∥PD,且PD=AD=2EC=4.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/00a10c03-b3aa-4a7e-924b-e34706e3bf25.png?resizew=161)
(1)求证:BE∥平面PDA;
(2)求该组合体的表面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/00a10c03-b3aa-4a7e-924b-e34706e3bf25.png?resizew=161)
(1)求证:BE∥平面PDA;
(2)求该组合体的表面积.
您最近一年使用:0次
解题方法
7 . 如图所示,正方形ADEF与梯形ABCD所在的平面互相垂直,已知
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/73e79a0f-8581-4fa1-a9e6-d307229998c3.png?resizew=215)
(1)求证:
平面
;
(2)连接
,求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffda707068a4a1778e79da6f20fb86d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/73e79a0f-8581-4fa1-a9e6-d307229998c3.png?resizew=215)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8ccd4181f956f6e0140bf0ab8f0716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
您最近一年使用:0次
2022-05-07更新
|
594次组卷
|
3卷引用:四川省成都市郫都区2021-2022学年高二下学期期中考试文科数学试题
8 . 如图,已知正方体
的棱长为
,
、
分别为棱
、
的中点.
平面
;
(2)设平面
与平面
的交线为
,求点
到直线
的距离及二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a8ec2583c364c079a7b1bfb1e8fe0c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad6b3d073d8dd1cb7d9c89116b9d81.png)
(2)设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad6b3d073d8dd1cb7d9c89116b9d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fc2a8903fe0660f618e787c14be2cd.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,梯形ABCD中,
,
,
,
,DE⊥AB,垂足为点E.将△AED沿DE折起,使得点A到点P的位置,且PE⊥EB,连接PB,PC,M,
分别为PC和EB的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/8140688b-1d9b-43cf-8c3f-0f6732a0b858.png?resizew=374)
(1)证明:
平面PED;
(2)求点C到平面DNM的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9723a6e093c297b001436e8932b1820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ad8d16722f5b9e7fd2602f14d5ffbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e530783dc49238736ed5c1157e6184dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/8140688b-1d9b-43cf-8c3f-0f6732a0b858.png?resizew=374)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eaa5e336f830a3e5cd60ff7a756f3ef.png)
(2)求点C到平面DNM的距离.
您最近一年使用:0次
2022-08-29更新
|
381次组卷
|
4卷引用:河南省百校联盟2023届高三上学期开学摸底联考全国卷文科数学试题
2022高三·全国·专题练习
解题方法
10 . 如图,在等腰直角三角形
中,
分别是
上的点,且
分别为
的中点,现将
沿
折起,得到四棱锥
,连接
证明:
平面
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084ce748ea72556d4d575d84d0ea594f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc6b04dcd5a34b8125696faf552ab63f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a79c1b3d8a1ea4d9370996706199e5a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0fa96c746ceab61c043cbb95b7d2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23853b5555468f9d803713d1d9353750.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://img.xkw.com/dksih/QBM/2022/8/19/3047954347515904/3048534967959552/STEM/c82ffe376a41484aada53e04d358b4d9.png?resizew=356)
您最近一年使用:0次
2022-08-20更新
|
1196次组卷
|
5卷引用:专题30 直线、平面平行的判定与性质-2
(已下线)专题30 直线、平面平行的判定与性质-2(已下线)8.5.3 平面与平面平行 (精讲)(2)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)第26讲 空间直线、平面的平行的判定4种常见方法(已下线)8.5.3 平面与平面平行(1)-2022-2023学年高一数学《考点·题型·技巧》精讲与精练高分突破系列(人教A版2019必修第二册)(已下线)8.5.3 平面与平面平行(精练)-【题型分类归纳】2022-2023学年高一数学同步讲与练(人教A版2019必修第二册)