1 . 如图
,在边长为
的菱形
中,
,点
分别是边
的中点,
,
.沿
将
翻折到
的位置,连接
,得到如图
所示的五棱锥
.
(1)在翻折过程中是否总有平面
平面
?证明你的结论;
(2)在翻折过程中当四棱锥
的体积最大时,求此时点
到平面
的距离;
(3)在(2)的条件下,求二面角的平面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e0b64d25ddd18454f88e40c45d7d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e426224c3a3ce9bb5a731eed81c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/960936ff4047762dde9f567036887cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e06b8bc2571146b241e6028a742e3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12225a1a1eda07908309f8100cc34726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b99271fe84300da304205280de1b63e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d865d5674e5c4e15946e45dce8dc2d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/22/d8af4fee-7227-42b0-9b5b-fe286db50df7.png?resizew=329)
(1)在翻折过程中是否总有平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4180c271831327644dc83240b715b5.png)
(2)在翻折过程中当四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45fec03f3187ef8ff985aa8c09088867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ca5b5fd1031438de2d2dd59be8c348.png)
(3)在(2)的条件下,求二面角的平面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6e39e62dad9881e30ac929c1f2958e.png)
您最近一年使用:0次
解题方法
2 . 如图,在梯形
中,
,
,
,
为边
上的点,
,
,将
沿直线
翻折到
的位置,且
,连接
.
(1)证明:
;
(2)求点
到平面
的距离.
![](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/aab40c3da31f132ceded9671f5020ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2395720e6d6aeb7efdcd8e921849acf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497846628a41a9bc750a645e045afb47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348fb71fbc47fd87e9ce011652ef4186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9596850884048064a3ec8bd48c4762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca74dc090f1cf88184b6e9b5280c9bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/5/e8517eae-8587-4b72-940a-b67bdce2eded.png?resizew=310)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d5ee2d6fcbcad17b69997ef0741d2d.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.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
是矩形,
平面
,
,
,
是
上一点,且
.
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
2023-09-06更新
|
1136次组卷
|
6卷引用:江西省鹰潭市贵溪市第一中学2023-2024学年高二上学期第一次月考数学试题
江西省鹰潭市贵溪市第一中学2023-2024学年高二上学期第一次月考数学试题山东省聊城第一中学2022-2023学年高二上学期期中数学试题福建省福州黎明中学2023-2024学年高二上学期11月期中考试数学试题辽宁省沈阳市五校协作体2023-2024学年高二上学期期中考试数学试题安徽省安庆市怀宁县第二中学2023-2024学年高二上学期期中数学试题(已下线)通关练03 用空间向量解决距离、夹角问题10考点精练(58题) - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教A版2019选择性必修第一册)
名校
解题方法
4 . 如图,在三棱柱
中,
平面ABC,
,
,D为
的中点,
交
于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/19/2d09c7d1-0d69-42c1-8e06-5ce03508846e.png?resizew=147)
(1)证明:
;
(2)求点E到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ba846c4dec057a9eec4174306efd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8bfe2553e852df73185d017c0a62fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb5abdd2a03d00be92c60c7a30b7fca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd4c85bb98a2a0afddd7ed92578ad2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/19/2d09c7d1-0d69-42c1-8e06-5ce03508846e.png?resizew=147)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73616ee0a39a5c84c6635b3840880b5.png)
(2)求点E到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dddfef906818cc8ddd00f867b77f227.png)
您最近一年使用:0次
2023-05-19更新
|
717次组卷
|
3卷引用:江西省贵溪市实验中学2023届高三下学期第四次月考数学(理)试题
江西省贵溪市实验中学2023届高三下学期第四次月考数学(理)试题江西省赣州市兴国县将军中学2023-2024学年高二上学期期中考试数学试题(普高部)(已下线)第06讲 1.4.2用空间向量研究距离、夹角问题(1)
5 . 如图所示的四棱锥
中,
平面
,底面
为直角梯形,
,点E为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/fa60c2a7-5dad-442e-908e-bafa7eff8164.png?resizew=187)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
平面
;
(2)求点A到平面
的距离.
![](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/f9a062a75a2b6c303b216e9e5fd12356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/fa60c2a7-5dad-442e-908e-bafa7eff8164.png?resizew=187)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)求点A到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,在直三棱柱
中,
,D为
的中点,
为
上一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/7b540f5d-3dc2-46e0-ac77-f59f0630156c.png?resizew=154)
(1)证明:
∥平面
;
(2)若
,
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d798b7b2ca788ec08967358c271406f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/7b540f5d-3dc2-46e0-ac77-f59f0630156c.png?resizew=154)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b886daa3c9bb7153acd9f651f99eb2c1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4195ed4a942092a90895d5e70e713a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b886daa3c9bb7153acd9f651f99eb2c1.png)
您最近一年使用:0次
2023-05-04更新
|
1512次组卷
|
6卷引用:江西省新余市第一中学2022-2023学年高一下学期第二次月考数学试题
名校
解题方法
7 . 已知在四棱锥
中,底面ABCD为边长为4的正方形,E为PA的中点,过E与底面ABCD平行的平面
与棱PC,PD分别交于点G,F,点M在线段AE上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/df11ec05-740a-4714-b076-0459d1d0a59a.png?resizew=181)
(1)求证:
平面CFM;
(2)若
平面ABCD,且
,求点G到平面CFM的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/809669f31487e232adf580fa586d759b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/df11ec05-740a-4714-b076-0459d1d0a59a.png?resizew=181)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5fba3cf6bbe668c2d49186d746b4a1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19f0fcacac715a1200770516d1e4a67.png)
您最近一年使用:0次
2023-04-18更新
|
394次组卷
|
2卷引用:江西省抚州市金溪县第一中学2023届高三下学期4月考试数学(文)试题
8 . 如图,直四棱柱
中,底面
为菱形,P为
的中点,M为
的中点,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/81216b32-a1dc-419e-8c5c-94c4915506b4.png?resizew=187)
(1)求证:
平面
;
(2)若
,求M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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/81216b32-a1dc-419e-8c5c-94c4915506b4.png?resizew=187)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/014973e890e8f37de1bf8a050475d4fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6e96872af0f0b341835576c407e364.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/009d2e3f3738a95445be95445c06ee36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6e96872af0f0b341835576c407e364.png)
您最近一年使用:0次
2023-02-06更新
|
950次组卷
|
3卷引用:江西省重点中学协作体2023届高三下学期第一次联考数学(文)试题
江西省重点中学协作体2023届高三下学期第一次联考数学(文)试题(已下线)专题8.17 立体几何初步全章综合测试卷(基础篇)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)黑龙江省哈尔滨市第一中学校2022-2023学年高一下学期期中数学试题
9 . 如图所示,在四棱锥
中,
,
为棱
的中点,
,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/4ed0bc12-a7e0-4872-9597-6543cb008f7e.png?resizew=175)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d730ae4307db56b47849c3a19dedfb3f.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/e9d31b90f35782e10643d38e2bda4958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab6c0c86a76630a10bdc005079c0f20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/4ed0bc12-a7e0-4872-9597-6543cb008f7e.png?resizew=175)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6deecf9ccb7b7879455050633219e09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d923a338dd2d2e29336b42574d38448.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef796b46e68fe77b117ff0483d2370c.png)
您最近一年使用:0次
2023-01-18更新
|
2797次组卷
|
7卷引用:江西省赣州市第十六中学2023届高三下学期第一次月考数学(文)试题
江西省赣州市第十六中学2023届高三下学期第一次月考数学(文)试题山东省泰安市泰山区山东省泰安第一中学2022-2023学年高一下学期6月月考数学试题河南省郑州市等5地+舞阳县第一高级中学等2校2022-2023学年高三上学期1月期末联考文科数学试题第8章 立体几何初步 章末测试(基础)-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)第八章:立体几何初步 重点题型复习(2)(已下线)第13章:立体几何初步 重点题型复习-【题型分类归纳】(已下线)第07讲 立体几何大题(11个必刷考点)-《考点·题型·密卷》
10-11高三上·内蒙古·期末
名校
10 . 如下图,在三棱锥
中,
分别是
的中点,
,
.
(1)求证:
平面
;
(2)求异面直线
与
所成角的余弦值;
(3)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e7f10e0c8af2d0d02a685f6f19e329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5016f2cf1328d15d090597514b63045.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6559aabe16c2318687089e7cc498b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65d5853c26657db448af610ac72cca4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/aedc281f-52e8-442c-9af4-20b48cea5b61.png?resizew=168)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce03b310edce42191f9fa75a1c909ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
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2022-12-26更新
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25卷引用:2012-2013学年江西省白鹭洲中学高二第二次月考文科数学试卷
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