名校
解题方法
1 . 如图1,在平行四边形ABCD中,AB=2,
,∠ABC=30°,AE⊥BC,垂足为E.以AE为折痕把△ABE折起,使点B到达点P的位置,且平面PAE与平面AECD所成的角为90°(如图2).
![](https://img.xkw.com/dksih/QBM/2022/5/5/2973060914454528/2973821919248384/STEM/24103a0b-e1e5-42e4-af23-c7153aa94fb5.png?resizew=415)
(1)求证:PE⊥CD;
(2)若点F在线段PC上,且二面角F-AD-C的大小为30°,求三棱锥F-ACD的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4187a861d1c558ee70701fc501f58842.png)
![](https://img.xkw.com/dksih/QBM/2022/5/5/2973060914454528/2973821919248384/STEM/24103a0b-e1e5-42e4-af23-c7153aa94fb5.png?resizew=415)
(1)求证:PE⊥CD;
(2)若点F在线段PC上,且二面角F-AD-C的大小为30°,求三棱锥F-ACD的体积.
您最近一年使用:0次
2022-05-06更新
|
1789次组卷
|
5卷引用:江西省临川一中暨临川一博中学2021-2022学年高二下学期第二次月考数学(理)试题
2 . 如图所示,在四棱锥
中,底面ABCD是直角梯形,
,AB=1,
,CD=2,
,平面PBC⊥平面ABCD,且PB=PC,E为BC的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967252437811200/2971705215016960/STEM/57a950e7bf8a41c0a38d2339292d872b.png?resizew=147)
(1)证明:平面PAE⊥平面PBD.
(2)若四棱锥
的体积为
,求E到平面PAB的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32e1b499d6b25ee132abcdd3f3cd288.png)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967252437811200/2971705215016960/STEM/57a950e7bf8a41c0a38d2339292d872b.png?resizew=147)
(1)证明:平面PAE⊥平面PBD.
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,在四棱锥
中,底面ABCD是直角梯形,
,
,
,
,
,平面
平面ABCD,且
,E为BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/43c6a96b-3efe-43db-8021-ce0c47d21dd0.png?resizew=186)
(1)证明:平面
平面PBD.
(2)若四棱锥
的体积为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32e1b499d6b25ee132abcdd3f3cd288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c383691e8d740830a865b12d66f7633.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/43c6a96b-3efe-43db-8021-ce0c47d21dd0.png?resizew=186)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d96357a07048ba79b8c84097d359d9.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20567d122853e7c3119a1749ca8ccc4.png)
您最近一年使用:0次
2022-04-26更新
|
751次组卷
|
4卷引用:江西省赣州市于都县第二中学等六校2021-2022学年高二下学期期中数学(理)试题
4 . 如图,正四棱台的高是
,上、下底面边长分别为
和
.
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962989657137152/2964425868812288/STEM/b6e750fa-2176-4aa3-a677-9a488bb946a6.png?resizew=170)
(1)求该棱台的侧棱长;
(2)求直线
与
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7c04f748b6cc5d8ac2fbb95bdfc4e8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19daa2b38e3a52bd7096d235c843110.png)
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962989657137152/2964425868812288/STEM/b6e750fa-2176-4aa3-a677-9a488bb946a6.png?resizew=170)
(1)求该棱台的侧棱长;
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
2022-04-23更新
|
871次组卷
|
3卷引用:江西省丰城市第九中学2022-2023学年高二上学期入学质量检测数学试题
江西省丰城市第九中学2022-2023学年高二上学期入学质量检测数学试题沪教版(2020) 必修第三册 同步跟踪练习 第11章 11.2.1 棱锥与圆锥(已下线)专题8.2 基本立体图形(重难点题型检测)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)
名校
解题方法
5 . 如图,在多面体
中,底面
是正方形,
,
,
底面
.
![](https://img.xkw.com/dksih/QBM/2022/4/11/2955971828899840/2957815720845312/STEM/a79a29e58b484996bb232c2f5d874249.png?resizew=196)
(1)证明:
平面
;
(2)若
,求该多面体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d4ea87a0837c4eee99c8b5ba6ec977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56dd125a93bf6d5567753b059eec6a9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a22d6b860f06fe23618b0d3de6768fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2022/4/11/2955971828899840/2957815720845312/STEM/a79a29e58b484996bb232c2f5d874249.png?resizew=196)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3c0430146b7b8d40ebb721a4d0de19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fc232acd89fc499de346969ce8ced1.png)
您最近一年使用:0次
2022-04-14更新
|
1177次组卷
|
6卷引用:江西省赣州市第四中学2022-2023学年高二下学期期中数学试题
江西省赣州市第四中学2022-2023学年高二下学期期中数学试题陕西省榆林市2022届高三下学期三模文科数学试题(已下线)回归教材重难点03 立体几何-【查漏补缺】2022年高考数学(文)三轮冲刺过关(已下线)必刷卷02(文)-2022年高考数学考前信息必刷卷(全国乙卷)山东省泰安市泰安第一中学2021-2022学年高一下学期期中数学试题(已下线)第31讲 空间几何体体积及点到面的距离问题4种题型
名校
解题方法
6 . 在三棱锥
中,已知
为
中点,
平面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/60993004-9df7-473d-a295-dd65828d9cff.png?resizew=152)
(1)求三棱锥
的体积;
(2)若点
分别为
的中点,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf0ec8df0fb78180e320eaa42ba362eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce03b310edce42191f9fa75a1c909ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01cd2bf7c88e24c91625e0f20ba2a4bb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/60993004-9df7-473d-a295-dd65828d9cff.png?resizew=152)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ae536809b1161fd4e83fdc7f42be96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6ae455e13587f20880b2642a3b1df67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
您最近一年使用:0次
21-22高三下·北京·阶段练习
名校
7 . 如图,在四棱锥P—ABCD中,底面ABCD为矩形,PA⊥平面ABCD,
,F是PB中点,E为BC上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/2228956d-3207-4894-a10a-2ecc7d533413.png?resizew=210)
(1)求证:AF⊥平面PBC;
(2)当BE为何值时,二面角
为
;
(3)求三棱锥P—ACF的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd3f755725991f18992e9edd11d0df9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/2228956d-3207-4894-a10a-2ecc7d533413.png?resizew=210)
(1)求证:AF⊥平面PBC;
(2)当BE为何值时,二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334b0be972ebf5a46333c0c4369aa90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
(3)求三棱锥P—ACF的体积.
您最近一年使用:0次
名校
解题方法
8 . 如图,在底面为矩形的四棱锥
中,E为棱
上一点,
底面
.
![](https://img.xkw.com/dksih/QBM/2022/3/22/2941889005674496/2947370271154176/STEM/6a8705bf98a545739c464715ccd4fe0a.png?resizew=167)
(1)证明:平面
平面
.
(2)若
,且四棱锥
的体积为20,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db807b09cc550f476b3f8fa0c6a14425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2022/3/22/2941889005674496/2947370271154176/STEM/6a8705bf98a545739c464715ccd4fe0a.png?resizew=167)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a646b2d81adb9f40d6443764402019d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2022-03-30更新
|
543次组卷
|
4卷引用:江西省南昌市第十五中学等名校2021-2022学年高二3月联考数学(理)试题
名校
解题方法
9 . 如图所示,四边形
为菱形,
,平面
平面
,点
是棱
的中点.
![](https://img.xkw.com/dksih/QBM/2022/3/22/2941859121971200/2942943798476800/STEM/51ecab44213542e9bd3ea5eccbaafb7c.png?resizew=203)
(1)求证:
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2022/3/22/2941859121971200/2942943798476800/STEM/51ecab44213542e9bd3ea5eccbaafb7c.png?resizew=203)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8a1ea8fca7c80a86dbe4d85cf9707d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b1fa95e2d4cff19c511e77ad83eabd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0199f36fcea2e8321aba196ec9cb8de.png)
您最近一年使用:0次
2022-03-24更新
|
780次组卷
|
3卷引用:江西省宜春市铜鼓中学2021-2022学年高二下学期第一次月考实验班数学(文)试题
10 . 如图,在四棱锥
中,底面
为矩形,
底面
,
,
为线段
上的一点,且
,
为线段
上的动点.
为何值时,平面
平面
,并说明理由;
(2)若
,
,平面
平面
,
,求出点
到平面
的距离.
![](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/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e298f750f819b60a3c061d5e504bb6e.png)
![](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/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4efe35226b072c2dab9bcdfe1cb93d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2022-03-04更新
|
1028次组卷
|
6卷引用:江西省南昌市第十九中学2021-2022学年高二下学期第一次月考数学试卷
江西省南昌市第十九中学2021-2022学年高二下学期第一次月考数学试卷江西省宜春市丰城第九中学2023届高三下学期重点班开学质量检测数学(文)试题“四省八校”2022 届高三下学期开学考试文科数学试题四川师范大学附属中学2022届高三二诊二模考试文科数学试题(已下线)第八章 立体几何初步(章末综合卷)-2021-2022学年高一数学链接教材精准变式练(人教A版2019必修第二册)(已下线)8.6.3平面与平面垂直(第1课时平面与平面垂直的判定定理)(精讲)(1)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)