名校
解题方法
1 . 如图1,四边形
是梯形,
是
的中点,将
沿
折起至
,如图2,点
在线段
上.
![](https://img.xkw.com/dksih/QBM/2022/8/25/3051997355786240/3052662834151424/STEM/11b16ef4ffa04da5840a560dcd5860b6.png?resizew=170)
![](https://img.xkw.com/dksih/QBM/2022/8/25/3051997355786240/3052662834151424/STEM/d1324d2e5c26489b941c7fdb7030c258.png?resizew=165)
(1)若
是
的中点,求证:平面
平面
;
(2)若
,平面
与平面
夹角的余弦值为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2768b54752183b24f77a6a0bd5a542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f9fba8a4098c1a0515286eb8d616dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee9bc57f1a415b5790b5b40854c832e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://img.xkw.com/dksih/QBM/2022/8/25/3051997355786240/3052662834151424/STEM/11b16ef4ffa04da5840a560dcd5860b6.png?resizew=170)
![](https://img.xkw.com/dksih/QBM/2022/8/25/3051997355786240/3052662834151424/STEM/d1324d2e5c26489b941c7fdb7030c258.png?resizew=165)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675e62b42d5693606536cd993e8e74e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/719103f93166bab4828257608e641a9a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbccb1ba0e436c5a3296955e8dd38853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b559200a2caa639355f7bc2ed8d37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe67036b4671b5d2a5c55b48c4d3bb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2012a47fba3643fec7aea1f3fc41eac.png)
您最近一年使用:0次
2022-08-26更新
|
1200次组卷
|
6卷引用:河南省濮阳市南乐县第一高级中学2022-2023学年高二上学期第二次月考理科数学重点班试题
2 . 如图,在直四棱柱
中,四边形
是菱形,
分别是棱
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/1bd4ce80-71dd-4eca-ad91-cd2879f0871b.png?resizew=202)
(1)证明:平面
平面
.
(2)若
,
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a373959bb9026f8a09845c0b828bf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/1bd4ce80-71dd-4eca-ad91-cd2879f0871b.png?resizew=202)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2e84d6e368f8368f8301c4cd66d6dd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95196d4658088f565e495c005cfed5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e57c789cfd4b0be7dbf63aa99435656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2022-08-23更新
|
446次组卷
|
4卷引用:河南省创新发展联盟2022-2023学年高三上学期入学摸底考试(一)文科数学试题
名校
解题方法
3 . 在如图所示的几何体中,四边形ABCD是正方形,平面ABCD⊥平面PAB,E,F分别是线段AD,PB的中点,
.证明:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/18/ceee8839-7f73-4488-9191-c59704a48bfc.png?resizew=158)
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
平面PDC;
(2)PB⊥平面DEF.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/18/ceee8839-7f73-4488-9191-c59704a48bfc.png?resizew=158)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
(2)PB⊥平面DEF.
您最近一年使用:0次
2022-07-08更新
|
623次组卷
|
5卷引用:河南省名校联盟2022-2023学年高二上学期开学考试数学试题
河南省名校联盟2022-2023学年高二上学期开学考试数学试题湖北省鄂州市2021-2022学年高一下学期期末数学试题黑龙江省绥化市望奎县第一中学2021-2022学年高一下学期期末数学试题(已下线)7.2 空间几何中的垂直(精练)(已下线)7.1 空间几何中的平行与垂直(精讲)
4 . 如图,已知四棱锥P-ABCD的底面为矩形,AB=PD=2,
,O是AD的中点,PO⊥平面ABCD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/164bd2e9-c74f-4d42-beb4-9cf1f1c9396c.png?resizew=274)
(1)求证:AC⊥平面POB;
(2)设平面PAB与平面PCD的交线为l.
①求证:
;
②求l与平面PAC所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c3ec174b1ce835cc8737ff6ce57e52.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/164bd2e9-c74f-4d42-beb4-9cf1f1c9396c.png?resizew=274)
(1)求证:AC⊥平面POB;
(2)设平面PAB与平面PCD的交线为l.
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778ba4674ac8501397aea09be7453ba3.png)
②求l与平面PAC所成角的大小.
您最近一年使用:0次
2022-07-13更新
|
908次组卷
|
6卷引用:河南省商开大联考2021-2022学年高一下学期期末数学试题
5 . 如图,在长方体
中,
,
,E,F分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/9100248e-7f1e-4dee-b5c5-ce4b368b5d5c.png?resizew=164)
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92105835f8075cb75dff244e908370b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/9100248e-7f1e-4dee-b5c5-ce4b368b5d5c.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a407b262c22419f73396170ecdc849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56266db6a49e811143c6a75aa4f63ac3.png)
您最近一年使用:0次
解题方法
6 . 如图,在棱长为
的正方体
中,
、
分别为棱
、
的中点.
![](https://img.xkw.com/dksih/QBM/2022/7/4/3015415316135936/3016275007193088/STEM/f422db84b1db4a258a7691963d857941.png?resizew=227)
(1)证明:平面
平面
;
(2)求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/2022/7/4/3015415316135936/3016275007193088/STEM/f422db84b1db4a258a7691963d857941.png?resizew=227)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f28b7860d15b6c3532ff829bc6eca43b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
您最近一年使用:0次
2022-07-05更新
|
1906次组卷
|
9卷引用:河南省南阳地区2021-2022学年高一下学期期终摸底考试数学试题
7 . 如图所示,圆锥PO的母线长为
,底面圆O的直径AB=2,C是圆O所在平面内一点,AC与圆O相切,连接BC交圆O于点D,连接PD,PC,CO,DO.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/d84a27cd-a4b4-4940-aa25-f278bb74b828.png?resizew=237)
(1)证明:
平面PAC;
(2)若
,求二面角
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/d84a27cd-a4b4-4940-aa25-f278bb74b828.png?resizew=237)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069bce57ad755d2340de357a67b8ae07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7c452c79a3dcb02718fe9e9b3feb64.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,矩形
所在平面与半圆弧
所在平面垂直,M是
上异于C,D的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/c35bff93-6a8a-41ce-8715-afd6132a8212.png?resizew=180)
(1)证明:
平面
;
(2)在线段
上是否存在点P,使得
平面
?说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/c35bff93-6a8a-41ce-8715-afd6132a8212.png?resizew=180)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d0492b25f10ae45c39f8e9838519259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c5ef850e256c98ca4f033999e61311.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3219a5fbe920e617eff32e558c0c6ac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
您最近一年使用:0次
2022-07-05更新
|
910次组卷
|
7卷引用:河南省驻马店市新蔡县第一高级中学2021-2022学年高二下学期7月月考文科数学试题
河南省驻马店市新蔡县第一高级中学2021-2022学年高二下学期7月月考文科数学试题江西省萍乡市2021-2022学年高一下学期期末考试数学试题(已下线)7.2 空间几何中的垂直(精练)(已下线)9.3 空间点、直线、平面之间的位置关系(已下线)立体几何专题:立体几何探索性问题的8种考法(已下线)专题强化一 线面、面面的平行和垂直位置关系-《考点·题型·技巧》(已下线)高一下期末真题精选(基础60题60个考点专练)
9 . 如图,在四棱锥
中,平面
平面
,
,
,
,
,
为棱
上一点,且
,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/6/7749788f-bd5d-4f3a-890c-1b866ef30593.png?resizew=211)
(1)证明:平面
平面
;
(2)求四棱锥
的体积.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9132a5490b529ffd1ca0e665448ff62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f5c876ee80d62472db4dc9e329fd80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccfb8347b22077e850fe698eabbb2f18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeef1db30212433062b3297569a7aafd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/6/7749788f-bd5d-4f3a-890c-1b866ef30593.png?resizew=211)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd3d448c8474f0d0f8d3fd7766d9f4d.png)
您最近一年使用:0次
2022-07-05更新
|
1285次组卷
|
8卷引用:河南省豫北名校联考2021-2022学年高二下学期5月阶段性测试(四)文科数学试卷
河南省豫北名校联考2021-2022学年高二下学期5月阶段性测试(四)文科数学试卷(已下线)2022年全国高考乙卷数学(文)试题变式题9-12题江苏省南京市中华中学2021-2022学年高一下学期期末数学试题(已下线)2022年全国高考乙卷数学(文)试题变式题17-20题湖南省彬州市安仁县第一中学2021-2022学年高一下学期期末统考数学模拟试题(一)(已下线)8.6.1 空间直线、平面的垂直(精讲)-2022-2023学年高一数学一隅三反系列(人教A版2019必修第二册)(已下线)专题四 期末高分必刷解答题(32道)-《考点·题型·密卷》广东省肇庆市封开县广信中学2022-2023学年高一下学期第二次月考数学试题
名校
解题方法
10 . 如图,在四棱锥
中,底面ABCD为平行四边形,
,
,
,平面
平面ABCD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/7261bff4-2279-4b2e-8e3c-f4ea73280c20.png?resizew=297)
(1)证明:
;
(2)若
,E为AD的中点,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6baf49925a5bcb359b542d45067c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/7261bff4-2279-4b2e-8e3c-f4ea73280c20.png?resizew=297)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa8c14100a4f847b41b9148954116c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8254b52b379a420c17d38334940b073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e73fe210736ce7b30b039d34587e3c1.png)
您最近一年使用:0次
2022-07-03更新
|
400次组卷
|
4卷引用:河南省新乡市封丘县第一中学2021-2022学年高二下学期期末数学文试题