名校
1 . 矩形ATCD中,
,B为TC的中点,
沿AB翻折,使得点T到达点P的位置,连结PD,得到如图所示的四棱锥
,M为PD的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963831177609216/2966638264205312/STEM/85d383f2-f39c-4a40-81bc-da8f7c59a1dd.png?resizew=485)
(1)求线段
的长度;
(2)求直线
与平面
所成角的正弦值的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5e30f37c5be1b607c71e214a679624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a04e30d5827f2120d997997e4e31ba17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963831177609216/2966638264205312/STEM/85d383f2-f39c-4a40-81bc-da8f7c59a1dd.png?resizew=485)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2022-04-26更新
|
706次组卷
|
2卷引用:安徽省江淮十校2022届高三下学期第三次联考理科数学试题
名校
解题方法
2 . 矩形ATCD中,
,
,B为TC的中点,
沿AB翻折,使得点T到达点P的位置.连结PD,得到如图所示的四棱锥
,M为PD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/17efd663-65fe-49b2-b3bb-aa48d577778f.png?resizew=361)
(1)求线段CM的长度;
(2)若平面
平面ABCD,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ee826937d2add7a93aaa1422f8b736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40560ea08d6cd8c1d4d9661ee6faaa3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a04e30d5827f2120d997997e4e31ba17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/17efd663-65fe-49b2-b3bb-aa48d577778f.png?resizew=361)
(1)求线段CM的长度;
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddfe0ccf24d760c77535a70c92dad145.png)
您最近一年使用:0次
3 . 如图,四棱锥
中,
平面
平面
.
![](https://img.xkw.com/dksih/QBM/2022/4/14/2958108894576640/2958549927542784/STEM/b86bb93e-3052-4040-869d-c3b45a77f745.png?resizew=259)
(1)若
为等边三角形,求证:
∥平面
;
(2)当四棱锥
的体积最大时,求二面角
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce12b74f689d61d372993ff0cc6e1535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21081b84313382e2a1821d43f3901350.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d992c5683a6c67f704275c2feee9ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90dbbd5b2fd0e7f1a69339f04cbfa5b6.png)
![](https://img.xkw.com/dksih/QBM/2022/4/14/2958108894576640/2958549927542784/STEM/b86bb93e-3052-4040-869d-c3b45a77f745.png?resizew=259)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9dc427a01582ec222446b352d40ab0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)当四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce12b74f689d61d372993ff0cc6e1535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fe3b229674fb062daaca049540b9b1.png)
您最近一年使用:0次
2022-04-15更新
|
626次组卷
|
2卷引用:安徽省合肥市中国科技大学附属中学2022届高三下学期三模理科数学试题
4 . 如图1,在直角梯形
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
,
,点
为
的中点,点
在![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94214b5db2aaa2f0ec33fb3364237b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
,将四边形
沿
边折起,如图2.
![](https://img.xkw.com/dksih/QBM/2022/4/4/2951134094770176/2954224430669824/STEM/ff8fb79c-00a1-4412-bd2e-c030bd31e7e4.png?resizew=279)
(1)证明:图2中的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
平面
;
(2)在图2中,若
,求该几何体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94214b5db2aaa2f0ec33fb3364237b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f08ff2c55514a933ae4c57e091d1a5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2f3df5713a423887c16e6355236372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/2022/4/4/2951134094770176/2954224430669824/STEM/ff8fb79c-00a1-4412-bd2e-c030bd31e7e4.png?resizew=279)
(1)证明:图2中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)在图2中,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4746df85049d1651d3f6c30212a7a9.png)
您最近一年使用:0次
2022-04-09更新
|
1883次组卷
|
7卷引用:安徽省六安第一中学2023届高考适应性考试数学试题
安徽省六安第一中学2023届高考适应性考试数学试题四川省攀枝花市2022届高三第二次统一考试文科数学试题四川省绵阳南山中学2023届高三下学期4月绵阳三诊热身考试文科数学试题四川省阆中中学校2023届高三第五次检测(二模)数学(文)试题江西省赣州市2023届高三模考押题卷(二)数学试题湖北省十堰市丹江口市第一中学2021-2022学年高一下学期期末数学试题(已下线)8.5.3 平面与平面平行 (精讲)(2)-【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)
名校
解题方法
5 . 如图,多面体
中,四边形
是边长为4的菱形,
,平面
平面
平面
.
![](https://img.xkw.com/dksih/QBM/2022/4/7/2952962389409792/2953275624906752/STEM/a2b066c0c56f487ebe38c18f20ae4a97.png?resizew=248)
(1)求证:
平面
;
(2)求二面角
的正弦值.
![](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/4991537cce64bbce6aa7ae68ec9fbf22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325fe3728e92af1233a412ca30d56cc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071c04a82086a731946621f2b13f1c8d.png)
![](https://img.xkw.com/dksih/QBM/2022/4/7/2952962389409792/2953275624906752/STEM/a2b066c0c56f487ebe38c18f20ae4a97.png?resizew=248)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40df8e474334faad849abb7cc6bbd12c.png)
您最近一年使用:0次
2022-04-07更新
|
341次组卷
|
2卷引用:安徽省滁州市2022届高三下学期第二次教学质量检测理科数学试题
解题方法
6 . 《九章算术》记录形似“楔体”的所谓“羡除”,就是三个侧面都是梯形或平行四边形(其中最多只有一个平行四边形)、两个不平行对面是三角形的五面体.如图,羡除
中,
是正方形,且
,
均为正三角形,棱
平行于平面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/a5285efe-dced-40f2-a3cf-e76ba09aafef.png?resizew=233)
(1)求证:
;
(2)求二面角
的大小.
![](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/6cb3e973f4e9361e1d23a0ab56006d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a0c85deb80d8e63bc60127e803f7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9366db1b71034abbe1a5693689cf1c22.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/a5285efe-dced-40f2-a3cf-e76ba09aafef.png?resizew=233)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ae949669447e566b8f4d5938163a9a.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c9c2c831a0552a7c934365bc49ad3f.png)
您最近一年使用:0次
7 . 如图,在多面体
中,四边形
为正方形,
,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/3/25/2943953569005568/2946520703025152/STEM/f8ebb245-7c8f-4146-82a2-090a7b8ebfb3.png?resizew=159)
(1)线段
上是否存在一点P,使得
面
?若存在,确定点P的位置,若不存在,请说明理由;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/646a1f9d6f3f896745b99e5477f6645b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c016262f7c32817de8cb270fc9244f5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e921f46d90e43f4517c55832b6280f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94558303a4e2bfcfcd13b5b140599ce.png)
![](https://img.xkw.com/dksih/QBM/2022/3/25/2943953569005568/2946520703025152/STEM/f8ebb245-7c8f-4146-82a2-090a7b8ebfb3.png?resizew=159)
(1)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eecabfacb32ff523680a7d2e7155c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff36d9348c57fd55644d5d748aa8e18.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,在四棱锥
中,
底面
,底面
为菱形,
,
,
,点E、F分别为棱
、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/0214840b-0790-43c7-ad7e-98d4c977486c.png?resizew=204)
(1)证明:
面
;
(2)求三棱锥
的体积
![](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/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d01872723102269f05c9d1b77c6e34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491c3a4f72b84ebadd28b90711435adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/0214840b-0790-43c7-ad7e-98d4c977486c.png?resizew=204)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6ae72f5e5891249caa10c43224da89c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149596fee6ed1e2d19fd8dadc14a8baf.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fc203fe37519a2fef5ed3f7f2e46d94.png)
您最近一年使用:0次
2022-03-28更新
|
1368次组卷
|
4卷引用:安徽省示范高中皖北协作区2022届高三下学期3月联考文科数学试题
解题方法
9 . 如图,在四棱锥
中,
平面
,底面
为菱形,
,
,点
、
分别是
、
的中点.
![](https://img.xkw.com/dksih/QBM/2022/3/24/2943276250406912/2943783771947008/STEM/89d31e3c-711b-4f4b-a0ce-78c302fe3e63.png?resizew=274)
(1)记平面
与平面
的交线为
,试判断直线
与平面
的位置关系,并加以证明;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.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/e7809a0611650cea73b90fc526018935.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/2022/3/24/2943276250406912/2943783771947008/STEM/89d31e3c-711b-4f4b-a0ce-78c302fe3e63.png?resizew=274)
(1)记平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70db40c42655327adee01caedfc9d50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2022-03-25更新
|
298次组卷
|
2卷引用:安徽省滁州市定远县育才学校2021-2022学年高三5月教学质量检测数学(文)试题
名校
解题方法
10 . 如图,在四棱锥
中,底面ABCD是正方形,AC、BD相交于点O,侧棱
底面
,
,E是PC的中点,过E作
交PB于点F,连FB接DF,BE.
![](https://img.xkw.com/dksih/QBM/2022/2/12/2915036850905088/2938442768924672/STEM/448a7d99a65141e896d4b570af6f13b9.png?resizew=366)
(1)求证:
平面
;
(2)设正方形边长为2,求四面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d4c42112e0a22f240ce2ae432e5b4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4a6a1e70241d600bc6c104313eac61.png)
![](https://img.xkw.com/dksih/QBM/2022/2/12/2915036850905088/2938442768924672/STEM/448a7d99a65141e896d4b570af6f13b9.png?resizew=366)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)设正方形边长为2,求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd1bc6147d69777b26a35d48522f7e.png)
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