1 . 如图,在三棱柱
中,平面
平面
,四边形
是矩形,四边形
是平行四边形,以
为直径的圆经过点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/00804562-373c-4a07-9278-5c93162a3996.png?resizew=168)
(1)求证:平面
平面
;
(2)在线段
上是否存在点
,使得
平面
?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535770901287f244911b42412533d4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/00804562-373c-4a07-9278-5c93162a3996.png?resizew=168)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d62d30d732c3c6ee3f0dd66d7059356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d32e76582bf550593fdef53e081225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
2019-05-23更新
|
274次组卷
|
2卷引用:【市级联考】湖北省黄冈市2019届高三2月联考数学(文)试题
2 . 如图所示,在四棱锥
中,底面
是边长为
的菱形,
,面
面
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/8bbdb8f5-84dc-404d-92c2-cbe7f7ac1b24.png?resizew=187)
(1)证明:
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7a42341edbc0b01ab0769c4c02c3e3.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/8e9d8454cfbbc6f41f56bbdecce3b126.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/8bbdb8f5-84dc-404d-92c2-cbe7f7ac1b24.png?resizew=187)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0063f3f48e49f2970ec7f097567cef5.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
3 . 如图,在五棱锥P-ABCDE中,△ABE是等边三角形,四边形BCDE是直角梯形且∠DEB=∠CBE=90°,G是CD的中点,点P在底面的射影落在线段AG上.
![](https://img.xkw.com/dksih/QBM/2019/4/30/2193622945488896/2198349774348288/STEM/887bf034-0a12-4bd0-9d39-eaaf5e9de0ed.png?resizew=301)
(Ⅰ)求证:平面PBE⊥平面APG;
(Ⅱ)已知AB=2,BC=
,侧棱PA与底面ABCDE所成角为45°,S△PBE=
,点M在侧棱PC上,CM=2MP,求二面角M-AB-D的余弦值.
![](https://img.xkw.com/dksih/QBM/2019/4/30/2193622945488896/2198349774348288/STEM/887bf034-0a12-4bd0-9d39-eaaf5e9de0ed.png?resizew=301)
(Ⅰ)求证:平面PBE⊥平面APG;
(Ⅱ)已知AB=2,BC=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3f8c3ba00c59e0634ed10fa85289de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3f8c3ba00c59e0634ed10fa85289de.png)
您最近一年使用:0次
4 . 如图,三棱柱
各条棱长均为4,且
平面
,
为
的中点,
分别在线段
和线段
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/6b82af10-5399-4e45-b43a-6029a3255cff.png?resizew=167)
(1)证明:平面
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d6ff7b2432128e057fc5cb010ac1b2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/557b5aba84be91ba4570b359f11d62e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17230625e72d3a9c6d72ff61019ff61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7490886e2807c7b8a4fa57d99c4dc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86814dbae9a5343d69bb4647900b3bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb16f7dbc4b9993c4efa0764df1d8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c435625ba95821118304e13c212c1b5a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/6b82af10-5399-4e45-b43a-6029a3255cff.png?resizew=167)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3834847059043d4677c6be33d9a81141.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e5e9bf7536a8512ef10452ab5dda5be.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50c28c709364f91dd0718a8db3e6297a.png)
您最近一年使用:0次
2019-05-05更新
|
582次组卷
|
3卷引用:【市级联考】湖北省十堰市2019年高三年级四月调研考试文科数学试题
5 . 如图,在四棱锥S﹣ABCD中,底面ABCD是梯形,AB∥DC,∠ABC=90°,AD=SD,
,侧面SAD⊥底面ABCD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/98acb5af-dc9c-492f-93a6-103f4590f5a3.png?resizew=202)
(1)求证:平面SBD⊥平面SAD;
(2)若∠SDA=120°,CD=1,求三棱锥S﹣BCD的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a171e9db435951d4109d1be2510a4c60.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/98acb5af-dc9c-492f-93a6-103f4590f5a3.png?resizew=202)
(1)求证:平面SBD⊥平面SAD;
(2)若∠SDA=120°,CD=1,求三棱锥S﹣BCD的体积.
您最近一年使用:0次
6 . 如图,四棱锥
中,
底面
,底面
是直角梯形,
,
,
,
,点
在
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/a22bfa4e-e91b-40e9-8705-497a49b0cc7f.png?resizew=165)
(1)已知点
在
上,且
,求证:平面
平面
;
(2)当二面角
的余弦值为多少时,直线
与平面
所成的角为
?
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a1721a436858a999093da04bc17bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e486a1aad96167ff62f6fb5136e0bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ab1959f7fa560977ffb9fb0e11bb2c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/a22bfa4e-e91b-40e9-8705-497a49b0cc7f.png?resizew=165)
(1)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0ce7aaca2b6725dac7ed5d2a437aa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f020ca4ad44801691235958e253907d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)当二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce81faef7c631553e02d7468973a74cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
您最近一年使用:0次
2019-12-08更新
|
290次组卷
|
7卷引用:湖北省襄阳市第四中学2017届高三下学期第一次模拟考试数学(理)试题
7 . 如图1,在矩形ABCD中,AB=4,AD=2,E是CD的中点,将△ADE沿AE折起,得到如图2所示的四棱锥D1—ABCE,其中平面D1AE⊥平面ABCE.
![](https://img.xkw.com/dksih/QBM/2019/12/4/2348110771642368/2348550248939520/STEM/0170d686153c42d284349fb91793d112.png?resizew=356)
(1)证明:BE⊥平面D1AE;
(2)设F为CD1的中点,在线段AB上是否存在一点M,使得MF∥平面D1AE,若存在,求出
的值;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2019/12/4/2348110771642368/2348550248939520/STEM/0170d686153c42d284349fb91793d112.png?resizew=356)
(1)证明:BE⊥平面D1AE;
(2)设F为CD1的中点,在线段AB上是否存在一点M,使得MF∥平面D1AE,若存在,求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1612a0a4df3353fba4da6678c6a0cf4b.png)
您最近一年使用:0次
2019-12-05更新
|
1019次组卷
|
12卷引用:湖北省武汉市2017-2018学年度部分学校新高三起点调研考试文科数学试题
湖北省武汉市2017-2018学年度部分学校新高三起点调研考试文科数学试题湖北省荆州中学2018届高三上学期第二次双周考数学(文)试题湖南省长沙市长郡中学2018届高三第三次月考数学(文科)(已下线)专题8.6 立体几何 (单元测试)(测)【文】-《2020年高考一轮复习讲练测》江西省宜春市上高二中2019-2020学年高二上学期第二次月考数学(文)试题(已下线)专题8.6 立体几何(单元测试)(测)-江苏版《2020年高考一轮复习讲练测》2020届广东省中山市高三上学期期末数学(文)试题(已下线)专题06 立体几何中折叠问题(第三篇)-备战2020年高考数学大题精做之解答题题型全覆盖(已下线)2.2.3 直线与平面平行的性质-2020-2021学年高一数学课时同步练(人教A版必修2)江苏省苏州市第十中学2020-2021学年高一下学期5月阶段调研数学试题 黑龙江省哈尔滨师范大学附属中学2021-2022学年高三上学期期中考试数学(文)试题陕西省榆林市神木中学2020-2021学年高三下学期培优班模拟考试文科数学试题
8 . 如图,在四棱锥P-ABCD中,底面ABCD是平行四边形,AB=2AD=2,∠DAB=60°,PA=PC=2,且平面ACP⊥平面ABCD.
(Ⅰ)求证:CB⊥PD;
(Ⅱ)求二面角C-PB-A的余弦值.
(Ⅰ)求证:CB⊥PD;
(Ⅱ)求二面角C-PB-A的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/466e950a-0203-486d-bb0f-d3c70f3bfbcd.png?resizew=171)
您最近一年使用:0次
2019-04-28更新
|
457次组卷
|
2卷引用:【市级联考】湖北省武汉市2019届高三4月调研测试数学(理)试题
9 . 如图,在直三棱柱
中,
是等腰直角三角形,
,
,点
是侧棱
的上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/127ff334-db8f-4a45-a8ce-07935742d604.png?resizew=131)
(1)证明:当点
是
的中点时,
平面
;
(2)若二面角
的余弦值为
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ad3a578f403b9e6b97fa2dc955fc11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/127ff334-db8f-4a45-a8ce-07935742d604.png?resizew=131)
(1)证明:当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6d06903252260d31d1a9cdeb735b089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ceb31247add8ca7b0853e801e1d125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac5b7d85cc224776e36a76a4db5d356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
2019-04-23更新
|
788次组卷
|
3卷引用:2020届湖北省武汉市高三下学期二月调考仿真模拟理科数学试题
10 . 如图,已知多面体
,
,
,
均垂直于平面
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/4639479a-38b2-456b-82eb-a6aeeade3eff.png?resizew=135)
(1)证明:
;
(2)求平面
与平面
所成锐二面角大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d17d14819681c455a91d7678742368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1859959fdb4c5edd8056893f94a10a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e97fcdcfd6183b976a61ef3222c607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13c772461aef1d9d715129636739748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1880586c33da315e49ccb6e2d531c6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a2749f3f4224a1753bcbe2e13b88fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c709354113697ec9c577c7b2449a12f0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/4639479a-38b2-456b-82eb-a6aeeade3eff.png?resizew=135)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab0d6ae2222fdc6a44c5d7583207646.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
您最近一年使用:0次