1 . 如图,四棱锥
中,底面
为矩形,
平面
,若
,
,三棱锥
的体积
,则
到平面
的距离是________ .
![](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/98823cbc09ca52df1fbcc446eba3e44f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddfe0ccf24d760c77535a70c92dad145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f63d22f5172eebabd077e24726c3d230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/51b4d488-cbf9-4fd5-92b9-bc82767e9fd2.png?resizew=167)
您最近一年使用:0次
名校
2 . 三棱柱
的底是边长为1的正三角形,高
,在
上取一点
,设面
与面
所成的二面角为
,面
与面
所成的二面角为
,则
的最小值是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac4fb99967c46a3855bcf2885b448c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a81da3172abc151e61cbf8a35779551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0109f79d338bdbd1c2969c52a48512c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ae369d670e349d3fc60b4295fb823af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c1f914da4657eca7865982b130b299.png)
您最近一年使用:0次
2016-12-03更新
|
687次组卷
|
2卷引用:2016届浙江省嘉兴一中高三期中理科数学试卷
3 . 如图,PA⊥圆O所在的平面,AB是圆O的直径,C是圆O上的一点,E、F分别是点A在PB、PC上的射影,给出下列结论:
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572254762270720/1572254768275456/STEM/34dcf127-e1ed-49d2-82b5-92ab64e3c3ee.png?resizew=201)
①AF⊥PB;②EF⊥PB;③AF⊥BC;④AE⊥平面PBC;⑤
.其中正确命题的序号是______ .
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572254762270720/1572254768275456/STEM/34dcf127-e1ed-49d2-82b5-92ab64e3c3ee.png?resizew=201)
①AF⊥PB;②EF⊥PB;③AF⊥BC;④AE⊥平面PBC;⑤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87b2b968085972da3b5353de96cb44f.png)
您最近一年使用:0次
2016-12-03更新
|
1029次组卷
|
2卷引用:2014-2015学年湖北省实验中学等高一下学期期末联考文科数学试卷
4 . 如图,正方体
的棱长为
,
分别为棱
,
上的点.下列说法正确的是__________ .(填上所有正确命题的序号)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/21/0568fc2b-c9dc-435f-9f8d-631a6467e791.png?resizew=167)
①
平面
;
②在平面
内总存在与平面
平行的直线;
③
在侧面
上的正投影是面积为定值的三角形;
④当
为中点时,平面
截该正方体所得的截面图形是五边形;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/21/0568fc2b-c9dc-435f-9f8d-631a6467e791.png?resizew=167)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d8a9d64ad3c8cba28840b41ed7837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
②在平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f45fae2d284b17d1acaf70efa13d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
您最近一年使用:0次
5 . 已知
,
是不重合的两条直线,
,
是不重合的两个平面.下列命题:①若
⊥
,
⊥
,则
∥
; ②若
⊥
,
⊥
,则
∥
;③若
∥
,
⊥
,则
⊥
;④若
∥
,
,则
∥
.其中所有真命题的序号是_______ .
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/970026156f1a43b19acbb6185bb2af1f.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/2a285e78d7874172a157002cd92769f3.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/38155397fab743b988e1f35d7e3b9ec1.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/b106f9251a3a434fa92b2d084f7b64d4.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/38155397fab743b988e1f35d7e3b9ec1.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/b106f9251a3a434fa92b2d084f7b64d4.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/970026156f1a43b19acbb6185bb2af1f.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/38155397fab743b988e1f35d7e3b9ec1.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/970026156f1a43b19acbb6185bb2af1f.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/b106f9251a3a434fa92b2d084f7b64d4.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/970026156f1a43b19acbb6185bb2af1f.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/38155397fab743b988e1f35d7e3b9ec1.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/970026156f1a43b19acbb6185bb2af1f.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/b106f9251a3a434fa92b2d084f7b64d4.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/38155397fab743b988e1f35d7e3b9ec1.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/b106f9251a3a434fa92b2d084f7b64d4.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/970026156f1a43b19acbb6185bb2af1f.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/38155397fab743b988e1f35d7e3b9ec1.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/970026156f1a43b19acbb6185bb2af1f.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/2a285e78d7874172a157002cd92769f3.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/2a285e78d7874172a157002cd92769f3.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/38155397fab743b988e1f35d7e3b9ec1.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/970026156f1a43b19acbb6185bb2af1f.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/38155397fab743b988e1f35d7e3b9ec1.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/359497d126b64a8e879bbf5635d27662.png?resizew=47)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/38155397fab743b988e1f35d7e3b9ec1.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571811813613568/1571811818930176/STEM/b106f9251a3a434fa92b2d084f7b64d4.png?resizew=16)
您最近一年使用:0次
14-15高二上·广东汕头·期末
解题方法
6 . 如图所示,在三棱锥
中,
平面
,
,则
与平面
所成角的正弦值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848cf874a774dd57769d0d06484ee939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/92636fda-153c-45c2-9d14-3050469bf388.png?resizew=141)
您最近一年使用:0次
2014高三·全国·专题练习
解题方法
7 . 如图所示,在正四棱柱ABCD-A1B1C1D1中,E,F,G,H分别是CC1,C1D1,D1D,DC的中点,N是BC的中点,点M在四边形EFGH上或其内部运动,且使MN⊥AC.
![](https://img.xkw.com/dksih/QBM/2014/3/27/1571581743513600/1571581748961280/STEM/75ec8c39-5a20-40f3-92aa-af6584e18e3d.png)
对于下列命题:①点M可以与点H重合;②点M可以与点F重合;③点M可以在线段FH上;④点M可以与点E重合.其中真命题的序号是________ (把真命题的序号都填上).
![](https://img.xkw.com/dksih/QBM/2014/3/27/1571581743513600/1571581748961280/STEM/75ec8c39-5a20-40f3-92aa-af6584e18e3d.png)
对于下列命题:①点M可以与点H重合;②点M可以与点F重合;③点M可以在线段FH上;④点M可以与点E重合.其中真命题的序号是
您最近一年使用:0次
14-15高一上·广东广州·期末
8 . 如图,
是
的直径,
垂直于
所在的平面,
是圆周上不同于
的任意一点,则图中直角三角形有________ 个.(要求:只需填直角三角形的个数,不需要具体指出三角形名称).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/2014/2/19/1571512727740416/1571512733188096/STEM/b0186f1f0f3241eabdd68f4a99d4bd92.png?resizew=293)
您最近一年使用:0次
9-10高二下·四川眉山·期末
解题方法
9 . 将边长为2,锐角为
的菱形
沿较短对角线
折成二面角
,点
分别为
的中点,给出下列四个命题:
①
;②
是异面直线
与
的公垂线;③当二面角
是直二面角时,
与
间的距离为
;④
垂直于截面
.
其中正确的是______________ (将正确命题的序号全填上).
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/4f3bdc47383c4188a1d0cd702232287b.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/d5011570b2af442ca2d6a16aa50b4819.png?resizew=48)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/ca65a43e3494478a95118b55346ce9a6.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/810255ef761d4c66a79254944bbfd535.png?resizew=79)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/f74b0e92ecab4e3e9f7c16e34c55b10e.png?resizew=33)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/ec89d7d6c115471c900a65d2925c77ae.png?resizew=56)
①
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/83d1761e17144cd5bfa0cea20333825a.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/89fa0ce58e95410cae81a945bb88bbd8.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/ee62b038fee34cc08497b0e126e9f4fe.png?resizew=28)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/ca65a43e3494478a95118b55346ce9a6.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/810255ef761d4c66a79254944bbfd535.png?resizew=79)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/ee62b038fee34cc08497b0e126e9f4fe.png?resizew=28)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/ca65a43e3494478a95118b55346ce9a6.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/6491e1a091b04eb48433ba3bdcad725d.png?resizew=28)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/ee62b038fee34cc08497b0e126e9f4fe.png?resizew=28)
![](https://img.xkw.com/dksih/QBM/2014/7/7/1571812019953664/1571812025393152/STEM/170241cf8bdd4d57a06b594c39ce0453.png?resizew=37)
其中正确的是
您最近一年使用:0次