解题方法
1 . 如图,在棱长为6的正方体
中,E,F分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/4/e29c94ce-11ab-41fb-ac2a-2f4fc38e49bd.png?resizew=177)
(1)求点D到平面
的距离;
(2)若平面
与棱
相交于点G,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/4/e29c94ce-11ab-41fb-ac2a-2f4fc38e49bd.png?resizew=177)
(1)求点D到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bff3ccea5989c60e51e321af3f53f54.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d797d94addf2ec4c37a305f1def37b.png)
您最近一年使用:0次
名校
解题方法
2 . 已知
是平面
上的点,
是平面
上的点,且
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8454989732716850cb57ca15f8ef596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ab061ed9ec918926f1defceb85924a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18b383fa3ea6598d7216944fea12ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b303b1f07604f5303aea94df7f0518e9.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
2024-01-18更新
|
490次组卷
|
3卷引用:广东省深圳市罗湖区2024届高三上学期期末数学试题
名校
解题方法
3 . 如图,在棱长为2的正方体
中,
分别是棱
的中点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281073861d018355f34d0d8db4b8ae5b.png)
A.![]() |
B.![]() |
C.直线![]() ![]() ![]() |
D.点![]() ![]() |
您最近一年使用:0次
2024-01-08更新
|
593次组卷
|
3卷引用:河北省保定市唐县第一中学2024届高三上学期期末数学试题
名校
4 . 已知平面
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3808849630e4031af37386c87321d2f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
2023-12-25更新
|
790次组卷
|
14卷引用:【新东方】【2021.5.19】【SX】【高三下】【高中数学】【SX00161】
(已下线)【新东方】【2021.5.19】【SX】【高三下】【高中数学】【SX00161】(已下线)模块一 专题1 立体几何(1)高三期末2018年浙江省名师原创预测卷(三)2020年浙江省名校高考预测冲刺卷(一)贵州省铜仁市思南中学2019-2020学年高二(下)期末数学(文科)试题(已下线)第30练 直线、平面平行的判定与性质-2021年高考数学(文)一轮复习小题必刷(已下线)第31练 直线、平面平行的判定与性质-2021年高考数学(理)一轮复习小题必刷浙江省宁波市宁海中学2021届高三下学期3月高考适应性考试数学试题重庆市乌江新高考协作体2022-2023学年高一下学期期末数学试题黑龙江省哈尔滨市2022-2023学年高一下学期期末数学试题四川省成都市2024届高三一模数学(理)试题四川省成都市2024届高三一模数学(文)试题北京市第二中学2023-2024学年高一下学期期中考试数学试题(已下线)11.3.3 平面与平面平行-【帮课堂】(人教B版2019必修第四册)
2023·全国·模拟预测
解题方法
5 . 如图,在四棱锥
中,
,
,
是等边三角形,且
,
,
,G为
的重心.
(1)证明:
平面PCD.
(2)若
,求点C到平面PAE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/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea8abb4cab55296ca7fc63de0af0aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/e74daa91-4337-4533-ba69-f3ae0839a5a1.png?resizew=157)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a227bcc7ee91e914c0c6bec05f82b0e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21bd7043d1e9d645183a84067144288.png)
您最近一年使用:0次
解题方法
6 . 已知正方体
的棱长为1,P是正方形
内(含边界)的一个动点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.存在无数个点P满足![]() |
B.存在无数个点P满足![]() ![]() |
C.若直线![]() ![]() ![]() ![]() ![]() |
D.当点P在棱![]() ![]() ![]() |
您最近一年使用:0次
7 . 如图所示,在长方体
中,
是
的中点,直线
交平面
于点
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/d3264c28-9628-4435-bd85-ccb6ec4e631e.png?resizew=179)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3698a582b84d023ada8bd057e87630e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/d3264c28-9628-4435-bd85-ccb6ec4e631e.png?resizew=179)
A.![]() |
B.![]() |
C.直线![]() ![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
2023-02-03更新
|
952次组卷
|
8卷引用:山东省泰安市2022-2023学年高三上学期期末考试数学试题
名校
解题方法
8 . 在四棱锥
中,底面
是直角梯形,
,
,
,
分别是棱
,
的中点.
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899231840321536/2902340650344448/STEM/e33bb52e-b185-4986-8bd7-1801e37e071c.png?resizew=215)
(1)证明:
平面
;
(2)若
,且四棱锥
的体积是6,求三棱锥
的体积.
![](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/d730ae4307db56b47849c3a19dedfb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899231840321536/2902340650344448/STEM/e33bb52e-b185-4986-8bd7-1801e37e071c.png?resizew=215)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e84094aedc798143d465276916c1b9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f09d555c9022f7546fe4a678b599376.png)
您最近一年使用:0次
2022-01-25更新
|
515次组卷
|
7卷引用:贵州省名校联盟2022届高三上学期期末数学(文)试题
9 . 如图,已知长方体
中,
,
.
为
的中点,平面
交棱
于点F.
![](https://img.xkw.com/dksih/QBM/2022/1/12/2892711865237504/2892979691831296/STEM/acf7e537-0f60-406d-8cf4-dd7d5078a83b.png?resizew=210)
(1)求证:
;
(2)求二面角
的余弦值,并求点A到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c565ac177fa0b9958553ea83b580c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/2022/1/12/2892711865237504/2892979691831296/STEM/acf7e537-0f60-406d-8cf4-dd7d5078a83b.png?resizew=210)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d568bb52b7ce2a3d0459e6d11990de3.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fad27a66337f663e7f1bcb83ecae0b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c565ac177fa0b9958553ea83b580c43.png)
您最近一年使用:0次
名校
解题方法
10 . 如图的正方体
中,棱长为2,点
是棱
的中点,点
在正方体表面上运动.以下命题不正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/a28e0cab-6bb7-4e09-8079-3c1b4c4d3039.png?resizew=164)
![](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/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/a28e0cab-6bb7-4e09-8079-3c1b4c4d3039.png?resizew=164)
A.侧面![]() ![]() ![]() |
B.点![]() ![]() ![]() ![]() ![]() |
C.若点![]() ![]() ![]() ![]() ![]() |
D.若点![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2021-12-21更新
|
1175次组卷
|
5卷引用:福建省莆田第二中学2022届高三上学期数学期末练习卷(一)试题
福建省莆田第二中学2022届高三上学期数学期末练习卷(一)试题山东省枣庄市滕州市第一中学2021-2022学年高三上学期12月月考数学试题山东省邹平市第一中学2021-2022学年高三上学期模拟新高考一卷数学试题(已下线)专题06 空间向量与立体几何(数学思想与方法)-备战2022年高考数学二轮复习重难考点专项突破训练(全国通用)(已下线)考点14 立体几何中的动态问题 2024届高考数学考点总动员【练】