10-11高二上·湖南·期末
1 . 如下图所示,正方体ABCD-A1B1C1D1的棱长为1,若E、F分别是BC、DD1中点,则B1到平面ABF的距离为 ( )
![](https://img.xkw.com/dksih/QBM/2011/1/5/1569955557425152/1569955562708992/STEM/7cc6169272244bcaaf4918bbe8d72fcd.png?resizew=151)
![](https://img.xkw.com/dksih/QBM/2011/1/5/1569955557425152/1569955562708992/STEM/7cc6169272244bcaaf4918bbe8d72fcd.png?resizew=151)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 如图所示,已知
,在
与
的交线上取线段
,且AC,BD分别在平面
和平面
内,它们都垂直于交线AB,并且
,
,求CD的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](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/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](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/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/7/622c2c67-5624-4d60-bf0b-d035e26464fa.png?resizew=177)
您最近一年使用:0次
2020-01-31更新
|
30次组卷
|
2卷引用:人教B版(2019) 必修第四册 逆袭之路 第十一章 立体几何初步 11.4.2 平面与平面垂直
2012·江苏南通·一模
解题方法
3 . 在所有棱长都相等的斜三棱柱
中,已知
,
,且
,连接
.
(1)求证:
平面
;
(2)求证:四边形
为正方形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986ba572d8373df48c996f8c8611498c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb91cb9a5a14169845d700fbd95890ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a024b90221d7ee52befd3ac238c5779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a277db452e76240ec83ec6a2864bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce03b310edce42191f9fa75a1c909ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c67981c526c83f2ae1f218b1350837.png)
(2)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28d6477c85c5a4ac410a884e92fbe53.png)
![](https://img.xkw.com/dksih/QBM/2012/5/30/1570873155280896/1570873160892416/STEM/5b85b859c2794c03ba0a2bfcaa7e2640.png?resizew=224)
您最近一年使用:0次
解题方法
4 . 如图,在四棱锥
中,平面
平面
为
上一点,四边形
为矩形,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/a1dcc455-b275-47e8-b4ea-cdffa1e92591.png?resizew=265)
(1)若
, 且
平面
,求
的值;
(2)求证:
平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d11e19c84255eb0431415c2dec553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad12ff1de2c0481e1e2d17c7b4b76a3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/a1dcc455-b275-47e8-b4ea-cdffa1e92591.png?resizew=265)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3360cd975103df6983f99ae9726a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c2b786c64e6a9ed2ec5670cde74f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1910c648c8bfa02218b2802f5bfbacfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0787d2cb66d00c49d3348b52acd407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4739ad948445af72d585fe29c745929b.png)
您最近一年使用:0次
解题方法
5 . 矩形
中,
,
,
分别为边
的中点,将
沿
折起,点
折起后分别为点
,得到四棱锥
.给出下列几个结论:
①
四点共面;
②
平面
;
③若平面
平面
,则
;
④四棱锥
体积的最大值为
.
其中正确的是_____________ .(填上所有正确的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d70de1ffdd9aa376b09bbcfa12644a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f45c6b93a871dc4dd5e66a9bfdecd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b560ea763573e76b92c854b7df9f3887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c11fcc769c32abf849cc3ed7b51098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3dfbb6beba0f887919ac213e09d59e6.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01985cb6a721b9a65f223c4a47e82bcb.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85fdaf5152ef688048b3cabc65f4e6cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20378a3ea31b34830f43edc7ca64ce9b.png)
③若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6117c203c66b3540f56fee395b4bbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6541dbabc4313e61bfabda5af8cf785a.png)
④四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3dfbb6beba0f887919ac213e09d59e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
其中正确的是
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11-12高二上·浙江台州·期中
6 . 已知直线a,b,c及平面
,给出下列命题:
①若b∥α且a∥α,则a∥b;
②若α∥β,c⊥α,则c⊥β;
③若a⊥b,a⊥α,则b∥α;
④若α⊥β,a∥α,则a⊥β
⑤若a⊥c,b⊥c,则a∥b或a、b异面或a、b相交
其中正确命题的序号是_______________ (把所有正确命题的序号都填上).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3551069710fc76e3abc0339527d8d05d.png)
①若b∥α且a∥α,则a∥b;
②若α∥β,c⊥α,则c⊥β;
③若a⊥b,a⊥α,则b∥α;
④若α⊥β,a∥α,则a⊥β
⑤若a⊥c,b⊥c,则a∥b或a、b异面或a、b相交
其中正确命题的序号是
您最近一年使用:0次
9-10高二下·四川眉山·期末
7 . 如图,平面
平面
,
与两平面
所成的角分别为
和
,过
分别作两平面交线的垂线,垂足为
,若
,则
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/15/b1f3b473-ef0d-4942-ac40-cce9c818d0f1.png?resizew=156)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa807136194c18d3ac58902c67f9333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec35dca6024e5185c7d5f7d7369bad3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77993759b8615ef0b42cb56ef027ff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ae2d8122aecb3f04c7b1160d3a67ad.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/15/b1f3b473-ef0d-4942-ac40-cce9c818d0f1.png?resizew=156)
A.4 | B.6 | C.8 | D.9 |
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8 . 已知矩形ABCD的边长
,一块直角三角板
PBD的边
,且
,如图.
(1)要使直角三角板
PBD能与平面ABCD垂直放置,求
的长;
(2)在(1)的条件下,求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7af0b5e7ab3585246b8186dc6872716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6595597d25112f247753397d25bf5080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e68a8006831c2f9a2af67efb001f2ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad880fdef6911471da3c82c4d6d19e68.png)
(1)要使直角三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6595597d25112f247753397d25bf5080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1443bfe022f648f813fb1e15b2d78b6.png)
(2)在(1)的条件下,求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9f1e2b86f4eca37c72011d3dffb0c9.png)
![](https://img.xkw.com/dksih/QBM/2012/2/27/1570776905056256/1570776910585856/STEM/300c26206cdc4cf2819f12b59be1418a.png?resizew=191)
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9 .
在平面
内,
,
是
的斜线,
,则点
在
上的射影在( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2f39d3fcb1664705228e683c2cc3b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a15a004f7d47ed595f063e60075223a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.直线![]() | B.直线![]() | C.直线![]() | D.![]() |
您最近一年使用:0次