1 . 如图,正方形
的边长为1,正方形
所在平面与平面
互相垂直,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572205183311872/1572205189005312/STEM/40a599c4-e52f-44e3-bef3-3607dd994c7d.png)
(1)求证:
平面
;
(2)求证:
;
(3)求三棱锥
的体积.
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572205183311872/1572205189005312/STEM/cd4593287214468b9f5343d3148070c5.png)
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572205183311872/1572205189005312/STEM/870bff5fc0584b4ea927c9c25db8d8a1.png)
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572205183311872/1572205189005312/STEM/cd4593287214468b9f5343d3148070c5.png)
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572205183311872/1572205189005312/STEM/bac69173fe9b402c8e6f3db24d2007ea.png)
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572205183311872/1572205189005312/STEM/7e437572ab474dc8b91ab683b65adcc4.png)
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572205183311872/1572205189005312/STEM/40a599c4-e52f-44e3-bef3-3607dd994c7d.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572205183311872/1572205189005312/STEM/4e37268c2f884d7f86ba1510c3ef3a7d.png)
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572205183311872/1572205189005312/STEM/a1ac04b2cf04497caf3c34b08f69eacb.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc4c50ada59b5838d296697a8e0bb8d.png)
(3)求三棱锥
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572205183311872/1572205189005312/STEM/fcfaed65b36041d9bd03ff656a6b3760.png)
您最近一年使用:0次
2 . 如图,四边形
是正方形,△
与△
均是以
为直角顶点的等腰直角三角形,点
是
的中点,点
是边
上的任意一点.
![](https://img.xkw.com/dksih/QBM/2015/3/25/1572027454300160/1572027459665920/STEM/11089b4bf19946629b08c59efbc2ec56.png)
(1)求证:
;
(2)求二面角
的平面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2015/3/25/1572027454300160/1572027459665920/STEM/11089b4bf19946629b08c59efbc2ec56.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ddaefd87840c63bb301477bfabf5b26.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea71ca581022f0091a634db730ac77ba.png)
您最近一年使用:0次
2016-12-03更新
|
3708次组卷
|
6卷引用:2015届广东省广州市高三1月模拟理科数学试卷
2015届广东省广州市高三1月模拟理科数学试卷2015-2016学年河南省信阳高中高二12月考理科数学试卷人教A版高中数学必修二 2.3.2 平面与平面垂直的判定安徽省阜阳市太和第一中学2020-2021学年高二(平行班)上学期开学考试数学试题(已下线)第六章 立体几何初步(基础过关)-2020-2021学年高一数学单元测试定心卷(北师大2019版必修第二册)湖南省长沙市雅礼中学2020-2021学年高二上学期期末数学试题
14-15高二上·广东汕头·期末
名校
3 . 如图,
为圆
的直径,点
.
在圆
上,且
,矩形
所在的平面和圆
所在的平面互相垂直,且
,
.
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585936973824/STEM/e70bdd0a74af4b1dad1f9bf296ec83af.png)
(1)设
的中点为
,求证:
平面
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c91baecb97fadd4f8ab49e6effcbc04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a951292add4574c1debd16800674e1e.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585936973824/STEM/e70bdd0a74af4b1dad1f9bf296ec83af.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280247d7df395bb9ea78c51e67b458d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c93a34cbd4c0dc198b74524c0e05a10.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e7b3a2c6ad3c82b8091e721c58e4e2.png)
您最近一年使用:0次
4 . 如图,正方体
的棱长为
,
分别为
的中点.
(1)求证:
;
(2)求二面角
的正切值.
![](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/8d52429789f22fe9061973e123a038d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f5572d9521e112be8148fea4d7241f.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16155b0c208b346e93529385c8793b49.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74534a54d7271e1b95fd3a74121468b.png)
![](https://img.xkw.com/dksih/QBM/2017/2/16/1625334186016768/1632305636458496/STEM/3ef8953362d0463789f94b1d9d73efde.png?resizew=218)
您最近一年使用:0次
2017-02-26更新
|
473次组卷
|
2卷引用:2016-2017学年广东省珠海市高一上学期期末考试B数学试卷
12-13高二上·黑龙江大庆·开学考试
5 . 如图
,在三棱锥
中,
平面
,
,
为侧棱
上一点,它的正(主)视图和侧(左)视图如图
所示.
(
)证明:
平面
.
(
)求三棱锥
的体积.
(
)在
的平分线上确定一点
,使得
平面
,并求此时
的长.
![](https://img.xkw.com/dksih/QBM/2017/11/3/1809219848675328/1809934050557952/STEM/6ef207b0e144411795bfccdf8bb1b3d1.png?resizew=133)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](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/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e258c6995b058164df335e154692b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://img.xkw.com/dksih/QBM/2017/11/3/1809219848675328/1809934050557952/STEM/6ef207b0e144411795bfccdf8bb1b3d1.png?resizew=133)
![](https://img.xkw.com/dksih/QBM/2017/11/3/1809219848675328/1809934050557952/STEM/1041d663056042889cc4a4a01e46ed8a.png?resizew=234)
您最近一年使用:0次
2016-12-02更新
|
1497次组卷
|
8卷引用:2012-2013学年广东省揭阳一中高一下学期第一次段考文科数学试卷
(已下线)2012-2013学年广东省揭阳一中高一下学期第一次段考文科数学试卷(已下线)2012-2013学年黑龙江大庆实验中学高二上学期开学考试文科数学试卷(已下线)2012-2013学年湖北武汉部分重点中学高二上学期期末考试文科数学卷北京市海淀清华附永丰学校2016-2017学年高二上学期期中考试数学试题(已下线)专题46 空间向量与立体几何大题解题模板-2021年高考一轮数学单元复习一遍过(新高考地区专用)(已下线)专题46 空间向量与立体几何大题解题模板-2021年高考一轮数学(理)单元复习一遍过(已下线)专题43 立体几何大题解题模板-2021年高考一轮数学(文)单元复习一遍过(已下线)专题03 立体几何大题解题模板-(新教材)2020-2021学年高二数学单元复习(人教A版选择性必修第一册)
2012·浙江台州·二模
名校
6 . 如图,AC是圆O的直径,点B在圆O上,∠BAC=30°,BM⊥AC交AC于点M,EA⊥平面ABC,FC//EA,AC=4,EA=3,FC=1.
(1)证明:EM⊥BF;
(2)求平面BEF与平面ABC所成的二面角的余弦值.
(1)证明:EM⊥BF;
(2)求平面BEF与平面ABC所成的二面角的余弦值.
![](https://img.xkw.com/dksih/QBM/2012/7/30/1570943890194432/1570943895568384/STEM/5e458b96-13c1-4413-af71-836dc330dd33.png?resizew=146)
您最近一年使用:0次
2016-12-01更新
|
1376次组卷
|
9卷引用:广东省广州市第二中学高二上学期数学人教A版选修2-1模块测试试卷
广东省广州市第二中学高二上学期数学人教A版选修2-1模块测试试卷(已下线)2012届浙江省台州中学高三下学期第二次统练文科数学(已下线)2012届浙江省宁波市五校高三适应性考试理科数学试卷(已下线)2012届浙江省东阳中学高三5月模拟考试理科数学试卷(已下线)2014届浙江省绍兴市第一中学高三上学期回头考试理科数学试卷2016届海南省文昌中学高三上学期期末考试理科数学试卷2017届陕西师范大学附属中学高三上学期第二次模考数学(理)试卷陕西省西安市长安区第一中学2017届高三4月模拟考试数学(理)试题2018届高三数学训练题:阶段滚动检测试题(六)
7 . 如图,在三棱柱ABC﹣A1B1C1中,∠BAC=90°,AB=AC=2,AA1=4,A1在底面ABC的射影为BC的中点E,D是B1C1的中点.
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572532911251456/1572532917149696/STEM/e6e568d68d4442409511d2ff8abede5d.png)
(1)证明:A1D⊥平面A1BC;
(2)求点B到平面A1ACC1的距离.
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572532911251456/1572532917149696/STEM/e6e568d68d4442409511d2ff8abede5d.png)
(1)证明:A1D⊥平面A1BC;
(2)求点B到平面A1ACC1的距离.
您最近一年使用:0次
8 . 如图,三角形
是边长为4的正三角形,
底面
,
,点
是
的中点,点
在
上,且
.
![](https://img.xkw.com/dksih/QBM/2015/7/10/1572178491924480/1572178497839104/STEM/ffe287c408e04d25895a9ac9b7693649.png)
(1)证明:平面
平面
;
(2)求直线
和平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551e4cd76a93de89ea2750160fe74923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4014edd5ca7ddd954507ab87eb2638e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535a65c61f47d2b893706d4bc3499e20.png)
![](https://img.xkw.com/dksih/QBM/2015/7/10/1572178491924480/1572178497839104/STEM/ffe287c408e04d25895a9ac9b7693649.png)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d85c98d07c0abe66dc7a529f0dcb14f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37793a3a810e823e10c340986f55ddd.png)
您最近一年使用:0次
9 . 如图,三角形△PDC所在的平面与长方形ABCD所在的平面垂直,PD=PC=4,AB=6,BC=3,点E是CD的中点,点F、G分别在线段AB、BC上,且AF=2FB,CG=2GB.
(1)证明:PE⊥FG;
(2)求二面角P﹣AD﹣C的正切值;
(3)求直线PA与直线FG所成角的余弦值.
您最近一年使用:0次
2016-12-03更新
|
4744次组卷
|
4卷引用:2015年全国普通高等学校招生统一考试理科数学(广东卷)
2015年全国普通高等学校招生统一考试理科数学(广东卷)四川省宜宾县第二中学校2017-2018学年高一下学期期末模拟数学试题(已下线)专题23 立体几何解答题(理科)-1专题30立体几何与空间向量解答题(第一部分)