名校
1 . 如图,在四棱锥
中,侧面
底面
,
是以
为斜边的等腰直角三角形,
,
,
,点E为
的中点.
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863840104972288/2867529480208384/STEM/d5df5c70cc92418db17e9e624d2a0fae.png?resizew=228)
(1)证明:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.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/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d730ae4307db56b47849c3a19dedfb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4ab7e657f01bdfa235f8c4d6681d13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa790984d385fe645a69518ef1f0d4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863840104972288/2867529480208384/STEM/d5df5c70cc92418db17e9e624d2a0fae.png?resizew=228)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137fcdac119eff6ac5990b6d201615df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e5777a34d4761364c48e2b53ab79ff1.png)
您最近一年使用:0次
2021-12-07更新
|
1526次组卷
|
7卷引用:山西省长治市第二中学校2021-2022学年高二上学期期末数学试题
名校
解题方法
2 . 如图,在四棱锥
中,
平面ABCD,
,
,
,
为PB上靠近
的三等分点.
![](https://img.xkw.com/dksih/QBM/2021/10/2/2826932171612160/2844647612006400/STEM/635ef8df22014b7b9b46e7525502b084.png?resizew=175)
(1)求证:
平面ACM;
(2)求直线CD与平面ACM所成角的正弦值.
![](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/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e90f9f4e44173888a54c624852064a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa962009f15c7fffd970205169bf6cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2021/10/2/2826932171612160/2844647612006400/STEM/635ef8df22014b7b9b46e7525502b084.png?resizew=175)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36222db36e348661eb5f616820e4e60f.png)
(2)求直线CD与平面ACM所成角的正弦值.
您最近一年使用:0次
2021-11-05更新
|
324次组卷
|
2卷引用:山西省长治市上党区第一中学校2021-2022学年高一下学期期末数学试题
10-11高三上·广东茂名·期中
名校
解题方法
3 . 如图,四面体
中,
、
分别是
、
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/fb30b1be-9b20-46fc-be02-fd044cc27f15.png?resizew=202)
(1)求证:
平面
;
(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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65d5853c26657db448af610ac72cca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6559aabe16c2318687089e7cc498b98.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/fb30b1be-9b20-46fc-be02-fd044cc27f15.png?resizew=202)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce03b310edce42191f9fa75a1c909ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
您最近一年使用:0次
2021-09-10更新
|
531次组卷
|
14卷引用:山西省朔州市怀仁县第一中学2018-2019学年高二下学期期末数学试题
山西省朔州市怀仁县第一中学2018-2019学年高二下学期期末数学试题2014-2015学年黑龙江哈尔滨师大附中高二上学期期末考试理科数学卷(已下线)2011届广东省高州三中高三上学期期中考试数学卷(已下线)2011届江苏省南京金陵中学高三预测卷2数学福建省泉州市晋江市南侨中学2019-2020学年高二上学期11月月考数学试题天津市静海县第一中学2017-2018学年高二10月学生学业能力调研数学试题陕西省咸阳市永寿中学2020-2021学年高三上学期开学考试数学(文)试题(已下线)专题19 立体几何综合-2020年高考数学(文)母题题源解密(全国Ⅰ专版)云南省楚雄天人中学2020-2021学年高二3月月考数学(文)试题江西省上高二中2022届高三上学期第二次月考数学(文)试题江西省新余市重点高中2022届高三上学期第二次月考 数学(文)试题吉林省东北师大附中、长春市十一高中、吉林一中、四平一中、松原实验中学2021-2022学年高三上学期联合模拟考试数学(文)试题黑龙江省大庆铁人中学2021-2022学年高三上学期期中考试文科数学试题上海市七宝中学2022届高三冲刺模拟卷二数学试题
4 . 如图,四棱锥
中,PA⊥平面ABCD,AB
CD,AB⊥BC,AC与BD交于点O,
,
,
,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/d10baf84-c586-4512-9a1d-aeec9d63b647.png?resizew=163)
(1)求证:BD⊥平面PAC;
(2)求直线PA与平面PBD所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aff008bf9d674fee28e3b4514d0b1c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73c03338db66b081700f70bcf9a0989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85e5c09e11833cc4cd94ebdbbd060773.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/d10baf84-c586-4512-9a1d-aeec9d63b647.png?resizew=163)
(1)求证:BD⊥平面PAC;
(2)求直线PA与平面PBD所成角的大小.
您最近一年使用:0次
2021-09-03更新
|
225次组卷
|
2卷引用:山西省晋中市2020-2021学年高二上学期期末数学(文)试题
5 . 如图,已知直三棱柱
,
,
,点M在棱CC1上,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589e867ef505b14fd52b65f9ba810ad4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/4acf290f-5043-4471-9a7d-d356ccb65bcf.png?resizew=148)
(1)证明:平面
平面
;
(2)平面
将该三棱柱分成上、下两部分,若上、下两部分的体积分别记为
和
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8d8e7033e0c21a760e1b03df654aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13ba5383e768dc86e1bfd79c10f96f4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589e867ef505b14fd52b65f9ba810ad4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/4acf290f-5043-4471-9a7d-d356ccb65bcf.png?resizew=148)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140088b0cb73812aa9d523c44559298a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de9078475c350c04bd97666d808dd55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4764374bd2fb78e59cd0b283637baeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63055a5d6916f99d07fede49120753f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f737b04ce09bc7e1ed86dc9b3c85203b.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,平面ABCD⊥平面DBNM,且菱形ABCD与菱形DBNM全等,且∠MDB=∠DAB,G为MC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/2c92e815-a970-40ac-a347-a0c5c2abd93f.png?resizew=189)
(1)求证:平面GBD∥平面AMN;
(2)求直线AD与平面AMN所成角的正弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/2c92e815-a970-40ac-a347-a0c5c2abd93f.png?resizew=189)
(1)求证:平面GBD∥平面AMN;
(2)求直线AD与平面AMN所成角的正弦值.
您最近一年使用:0次
2021-09-01更新
|
1742次组卷
|
9卷引用:山西省阳泉市2021届高三上学期期末数学(理)数学试题
山西省阳泉市2021届高三上学期期末数学(理)数学试题山西省怀仁市第一中学校2021届高三下学期一模理科数学试题山西省祁县中学2021届高三下学期3月月考数学(理)试题浙江省金色联盟(百校联考)2020-2021学年高三上学期9月联考数学试题(已下线)对点练46 直线、平面平行的判定及其性质-2020-2021年新高考高中数学一轮复习对点练江苏省南通市海安高级中学2020-2021学年高三上学期10月第一次阶段检测数学试题江苏省南通市海安高级中学2020-2021学年高三上学期1月调研数学试题(已下线)专题03 直线与平面所成角(含探索性问题)-【解题思路培养】2022年高考数学一轮复习解答题拿分秘籍(全国通用版)(已下线)专题30 空间中直线、平面平行位置关系的证明方法-学会解题之高三数学万能解题模板【2022版】
解题方法
7 . 如图,在四棱锥
中,
平面
,底面
是菱形,且
,
,
,其中
,
为
与
的交点,
为棱
上一点.
![](https://img.xkw.com/dksih/QBM/2021/7/23/2770471288651776/2789436941107200/STEM/0c6f626222ba4cdda4a1d61fa357b22b.png?resizew=391)
(1)求证:平面
平面
;
(2)若
平面
,求三棱锥
的体积的最大值;
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4217f4375caaeef4d4221143d5f6bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecefc81daf4044d2d95bd16d05df7823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/2021/7/23/2770471288651776/2789436941107200/STEM/0c6f626222ba4cdda4a1d61fa357b22b.png?resizew=391)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/677d1863ff4d8ac1604b18149d4f320f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826bf6fa3706921b77ad0eb4fcc206bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b999123e51b75bfeea6bee373e1677e9.png)
您最近一年使用:0次
解题方法
8 . 如图,平面
平面
,四边形
为正方形,点
在正方形
的外部,且
,
.
![](https://img.xkw.com/dksih/QBM/2021/6/13/2741908593188864/2782274798854144/STEM/b1a9ce6490c94c0c9b28bc7b61e757a2.png?resizew=211)
(1)证明:
.
(2)求四棱锥
的体积及棱
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9905abb76186af63eb7e9565d796bce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1f13007c6d134c50004c62dc240707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1f13007c6d134c50004c62dc240707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9d54cbbf601f4583659771eb534997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1efa2b0018617bd579875185dafca39a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://img.xkw.com/dksih/QBM/2021/6/13/2741908593188864/2782274798854144/STEM/b1a9ce6490c94c0c9b28bc7b61e757a2.png?resizew=211)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc0666d63e6c13fa6a19b59523aa1eb.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0bc34d1771fb14c101911660eaa075b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,在三棱锥
中,
平面
,
,
.求证:
;
(2)若
,
分别在棱
,
上,且
,
,问在棱
上是否存在一点
,使得
平面
.若存在,则求出
的值;若不存在.请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c71dbf267939080668be464f1aa60da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0530f462e5ec1e58c46e1f7644d0cc21.png)
(2)若
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98de02d1d5b7ac04bce54be393218922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760e8882e84ecd68bc889a55efce5d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d3f076d3f5a78fc081c252e9a55d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261fbbc173664b0047448fef17763dfb.png)
您最近一年使用:0次
2021-08-07更新
|
627次组卷
|
6卷引用:山西省太原市2020-2021学年高一下学期期末数学试题
名校
解题方法
10 . 如图,在三棱锥
中,
平面
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/3fcd7876-c63d-44fb-8bd0-873d2f6e1391.png?resizew=152)
(1)若
,
.求证:
;
(2)若
,
,
分别在棱
,
,
上,且
,
,
.求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
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(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0530f462e5ec1e58c46e1f7644d0cc21.png)
(2)若
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![](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/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98de02d1d5b7ac04bce54be393218922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f68184ccf2ee70eb5b4f037f58fa06b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760e8882e84ecd68bc889a55efce5d03.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
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2021-08-07更新
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4卷引用:山西省太原市2020-2021学年高一下学期期末数学试题
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