解题方法
1 . 如图,正方体
中,
、
分别是
、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/29/65bf0f50-1254-40f1-b4bf-9a19187d295d.png?resizew=213)
(1)求证:
平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/5fbafedc202bd0d86c4dfdece9f8f4fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/29/65bf0f50-1254-40f1-b4bf-9a19187d295d.png?resizew=213)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49644c4cdd8a0e9bb6241c625c4ae21e.png)
您最近一年使用:0次
2022-06-23更新
|
618次组卷
|
2卷引用:广西钦州市第四中学2022-2023学年高二上学期第二次学考模拟考试数学试题
解题方法
2 . 如图,在正三棱柱
中,点
,
分别是棱
,
上的点,点
是线段
上的动点,
,
.
![](https://img.xkw.com/dksih/QBM/2022/6/3/2993276968550400/2995557152178176/STEM/a106b9f8-22e8-4f4b-bd9f-432980b1ce69.png?resizew=172)
(1)若点
为线段
的中点,求证
平面
;
(2)若点
时,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.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/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12857c14dd0482aae811748caede4420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://img.xkw.com/dksih/QBM/2022/6/3/2993276968550400/2995557152178176/STEM/a106b9f8-22e8-4f4b-bd9f-432980b1ce69.png?resizew=172)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b46a6a89f3ec310bf198f49089bbd99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a57bddefd839521ba5a4bb7eb40cf2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57546e91a756f7147114a150a9ae8977.png)
您最近一年使用:0次
名校
解题方法
3 . 图,在正三棱柱
中,O为
与
的交点,M为
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/967cb39e-51f9-4598-8df3-d77f92111cbc.png?resizew=191)
(1)证明:
平面
;
(2)若G为线段FC上一动点,在平面
上是否存在一点N,使得
平面
恒成立?若存在,请找出点N位置并证明
平面
;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a9ad711b25c36dae0c2a2cedff9954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/393ebfea258a58906706888f0d6f2582.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/967cb39e-51f9-4598-8df3-d77f92111cbc.png?resizew=191)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1211fdbcc2a4a36e24b4e6c5c920bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
(2)若G为线段FC上一动点,在平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e6c97d975d4b04061715c41c00e1e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b14cf4977ee2dac0bd5b0fca4dadc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e6c97d975d4b04061715c41c00e1e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b14cf4977ee2dac0bd5b0fca4dadc3.png)
您最近一年使用:0次
2022-05-13更新
|
1010次组卷
|
5卷引用:广西桂平市麻垌中学2021-2022学年高一下学期期中考试数学试题
广西桂平市麻垌中学2021-2022学年高一下学期期中考试数学试题福建省龙岩市非一级达标校2021-2022学年高一下学期期中联考数学试题河北省邢台市南和区第一中学2021-2022学年高一下学期第三次月考数学试题福建省厦门外国语学校2021-2022学年高一下学期期中考试数学试题(已下线)第一章 点线面位置关系 专题一 空间平行关系的判定与证明 微点1 空间平行关系的判定与证明【培优版】
名校
解题方法
4 . 如图,四棱柱
中,底面ABCD是菱形,
,
平面ABCD,E为
中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/febec444-e341-426e-bade-a0dc5bd777f2.png?resizew=181)
(1)求证:
平面
;
(2)求三棱锥
的体积;
(3)在
上是否存在点M,满足
平面
?若存在,求出AM的长;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4339a40ae9d1947ec3a4b3e2fa3a16cd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/febec444-e341-426e-bade-a0dc5bd777f2.png?resizew=181)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89006cac018a9875f65ed7bd429c61bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e48e2f18c4c61dfcc908827ac3c8a204.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c23ea8141b89b3c737ce64d3be380f.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3414bf337e4831721c7d894f6e125369.png)
您最近一年使用:0次
2022-04-30更新
|
850次组卷
|
5卷引用:广西南宁市宾阳中学2021-2022学年高一下学期期末考试数学试题
广西南宁市宾阳中学2021-2022学年高一下学期期末考试数学试题广东省清远市重点中学2021-2022学年高一下学期期中数学试题云南省昆明市嵩明县2021-2022学年高一下学期期中考试数学试题(已下线)专题08 立体几何中的平行与垂直问题-2021-2022学年高一数学下学期期末必考题型归纳及过关测试(人教A版2019)广西柳州市第三中学2023-2024学年高二上学期开学数学试题
5 . 已知四棱锥
中,
,
平面
,点
为
三等分点(靠近
点),
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/3/29/2946770215813120/2947907939516416/STEM/538954bc-3d32-4d0b-9b56-cf0f84987aa4.png?resizew=192)
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958f880eccc0a0e15aefc54078d8aa2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac192cfba38bf0e2df0c2d490596aa65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd92e5c56c1b76dd3811108f2cc1286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88870519c473fb6fb36b5a88a42df24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4280be91682e5d8a0d0704190319bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2ae98eb223b4fe33e53e9d3ba4cc40.png)
![](https://img.xkw.com/dksih/QBM/2022/3/29/2946770215813120/2947907939516416/STEM/538954bc-3d32-4d0b-9b56-cf0f84987aa4.png?resizew=192)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ade8233bc5e455bc00825e081647519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632854d063d897c2b4df9551098118e9.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,已知正四棱锥
中,O为底面
对角线的交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/3612a9ff-8f8d-43c2-8a67-85083b2c65a5.png?resizew=176)
(1)求证:
平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/3612a9ff-8f8d-43c2-8a67-85083b2c65a5.png?resizew=176)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/963a91995abd4927d75406d16e10a81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2022-03-28更新
|
336次组卷
|
2卷引用:广西贺州市2021-2022学年高一下学期期末质量检测数学试题
解题方法
7 . 如图,四棱柱
的底面是边长为2的正方形,侧棱
平面ABCD,且
,E、F分别是AB、BC的中点,P是线段
上的一个动点(不含端点),过P、E、F的平面记为
,Q在
上且
,则下列说法正确的个数是( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/f09212f8-750e-48ea-89f4-5304f8508592.png?resizew=141)
①三棱锥
的体积是定值;
②当直线
时,
;
③当
时,平面
截棱柱所得多边形的周长为
;
④存在平面
,使得点
到平面
距离是A到平面
距离的两倍.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa858b7c23b77ab2647e01ae4ad57fb5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/f09212f8-750e-48ea-89f4-5304f8508592.png?resizew=141)
①三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875bdebefed0e23c0dc058f106f3b8f8.png)
②当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65cd001ef3de929498a919caaedeec84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982635c07eaa7715b1ffd9dbabc3bcaa.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65592c5c899b178c0143daa149c33cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86391dc521a0d9de2a6e08ed04a9ac63.png)
④存在平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
名校
解题方法
8 . 已知
矩形ABCD所在的平面,且
,M、N分别为AB、PC的中点.求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/11/2a20239f-268a-4c7b-8f7c-af20333520bc.png?resizew=224)
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
平面ADP;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f6967901d6c855864df01e7bf7a15c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/11/2a20239f-268a-4c7b-8f7c-af20333520bc.png?resizew=224)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828247a3338571cb0d4ba2a5bf88929c.png)
您最近一年使用:0次
2022-07-10更新
|
483次组卷
|
7卷引用:广西百色市2021-2022学年高一下学期期末教学质量调研测试数学试题
广西百色市2021-2022学年高一下学期期末教学质量调研测试数学试题(已下线)专题8.3 空间点、直线、平面之间的位置关系(练)- 2022年高考数学一轮复习讲练测(新教材新高考)广东省揭阳第一中学2020-2021学年高一下学期期末数学试题重庆市荣昌中学校2020-2021学年高二上学期十月月考数学试题内蒙古赤峰市赤峰第四中学2022-2023学年高一下学期5月月考数学试题甘肃省白银市会宁县第四中学2022-2023学年高一下学期第一次月考数学试题广东省鹤山市第一中学2023-2024学年高二上学期第一阶段考数学试题
名校
9 . 如图所示,
⊥平面
,四边形
为矩形,
,
.
∥平面
;
(2)求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedde879f99aed69d745d5ec8fe62084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf6037ec72e49c216aac885b43b66827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5141d485679c8eae5df84647889372d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14eec658f69c267a70c1e8f9b744e282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedde879f99aed69d745d5ec8fe62084.png)
您最近一年使用:0次
2022-11-18更新
|
1036次组卷
|
28卷引用:广西桂林示范性高中十二校联盟2021-2022学年高二下学期入学检测数学(理)试题
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10 . 已知四边形
是菱形,四边形
是矩形,平面
平面
,
,
,G是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/eff0fa38-5a0e-449e-bb84-ddc71b80cdf2.png?resizew=160)
(1)证明:
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a4e3f0349fa83dc2a0b7d798f04843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077e97453ae00a89df35be3a0b722df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/eff0fa38-5a0e-449e-bb84-ddc71b80cdf2.png?resizew=160)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f220434c51562f59e302899804899954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7267f2934c256fd74e58cb62d685bba0.png)
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