名校
1 . 在四面体A-BCD中,E,F,M分别是AB,BC,CD的中点,且BD=AC=2,EM=1.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/8/76b40c7f-e008-4789-8b5f-d37144406b6f.png?resizew=212)
(1)求证:
平面ACD;
(2)求异面直线AC与BD所成的角.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/8/76b40c7f-e008-4789-8b5f-d37144406b6f.png?resizew=212)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
(2)求异面直线AC与BD所成的角.
您最近一年使用:0次
2022-04-20更新
|
796次组卷
|
10卷引用:天津市实验中学滨海学校2020-2021学年高一下学期期中数学试题
天津市实验中学滨海学校2020-2021学年高一下学期期中数学试题安徽省安庆市2020-2021学年高一下学期期末数学试题北师大版(2019) 必修第二册 金榜题名 第六章 单元素养评价天津市西青区当城中学2022-2023学年高一下学期期中数学试题山东省滨州市2019-2020学年高一(下)期末数学试题山东省滨州市2019—2020学年下学期高一年级期末考试数学试题四川省威远中学2020-2021学年高二上学期第一次月考数学(理)试题沪教版(2020) 必修第三册 精准辅导 第10章 单元测试四川省遂宁市射洪中学校2022-2023学年高二上学期第一次学月考试数学(文科)试题四川省遂宁市射洪中学校2022-2023学年高二上学期第一次学月考试数学(理科)试题
2 . 如图,四棱锥
中,底面ABCD是边长为2的正方形,
平面ABCD,且
,E为PD中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/1482ca82-20f3-4b03-8f0e-faa8c57c30f8.png?resizew=156)
(1)求异面直线CE与PB所成角的余弦值;
(2)求证:
平面PCD.
![](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/0b80ee363635d73f601654339028daec.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/1482ca82-20f3-4b03-8f0e-faa8c57c30f8.png?resizew=156)
(1)求异面直线CE与PB所成角的余弦值;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,在棱长为4的正方体ABCD-A1B1C1D1中,设E是CC1的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/a4b84778-a3bb-4d10-9884-88d876d8c8b5.png?resizew=211)
(1)求证:BD1⊥AC;
(2)求证:AC∥平面BD1E;
(3)求三棱锥E-BCD1的体积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/a4b84778-a3bb-4d10-9884-88d876d8c8b5.png?resizew=211)
(1)求证:BD1⊥AC;
(2)求证:AC∥平面BD1E;
(3)求三棱锥E-BCD1的体积.
您最近一年使用:0次
名校
4 . 如图,平面四边形
中,
,
,
,以
为折痕将
折起,使点
到达点
的位置,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/8539981b-2e63-47a2-a074-47f0f4b08c28.png?resizew=265)
(1)若
为棱
中点,求异面直线
与
所成角的余弦值;
(2)证明:平面
平面
;
(3)求二面角
的平面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6108b94b7b2d4e1931e0ca459bd843b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1719410d21e3de1242366ce2965e838c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3e27f6e6d1592408508cc9fd14d480.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/8539981b-2e63-47a2-a074-47f0f4b08c28.png?resizew=265)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c309e58bf083bad13abd549720a63a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a7ba7cd0c654714c967a900513ba16.png)
您最近一年使用:0次
2021-09-11更新
|
808次组卷
|
3卷引用:天津市四校联考2020-2021学年高一下学期期末数学试题
名校
5 . 如图,在四棱锥
中,
平面
,底面四边形
为直角梯形,
,
,
,
,
,
分别为
,
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/215b1dfe-dd81-4ac9-a134-add818fbc36a.png?resizew=188)
(1)求证:
.
(2)求
与平面
所成角的余弦值.
(3)求点
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/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ef03497414d454933f76684ee16970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.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/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/215b1dfe-dd81-4ac9-a134-add818fbc36a.png?resizew=188)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/962515007ca98ad2d36557b60a42ad6f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae87abaa1673c596bd4bc4dcb817ca4.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
您最近一年使用:0次
2021-09-03更新
|
469次组卷
|
2卷引用:天津市西青区杨柳青第一中学2020-2021学年高二上学期9月月考数学试题
6 . 如图,在正方体
中
![](https://img.xkw.com/dksih/QBM/2021/5/14/2720927771041792/2770666442833920/STEM/3e090a0b6765454f8caccc68b67bf1bc.png?resizew=222)
(1)求异面直线
与
所成角的大小;
(2)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a0e00113872f921116b6c0c3177d0f.png)
(3)求证:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/2021/5/14/2720927771041792/2770666442833920/STEM/3e090a0b6765454f8caccc68b67bf1bc.png?resizew=222)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a0e00113872f921116b6c0c3177d0f.png)
(3)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157770e4c9689b87ed922229e1682d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf9628142422a4884bd59538da6d312.png)
您最近一年使用:0次
7 . 四棱锥
中,底面
为矩形
底面
,点M是侧棱
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/0cc43a15-df20-42e2-b074-1c74308a9cd2.png?resizew=158)
(1)求异面直线
与
所成角的大小;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb2e071d4e01107dcf7d95cbb86b415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe8faf18c207e0ffe632788444c9acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/0cc43a15-df20-42e2-b074-1c74308a9cd2.png?resizew=158)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1497bbe0ac8de93f8c8623d5e700057.png)
您最近一年使用:0次
名校
8 . 如图,在四棱锥
中,平面
平面
,四边形
为矩形,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/e3e79693-ca30-4d23-891c-6d0b514a6667.png?resizew=180)
(1)求异面直线
与
所成的角;
(2)求证:平面
平面
;
(3)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2686149cd09003b9dcccb51d81fe51ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99fcf069408979d03a99f9e2fe0d5f07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/e3e79693-ca30-4d23-891c-6d0b514a6667.png?resizew=180)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bcbf1197b6a9e629dbd76ba6b8fbd81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f35614aff055b98b76ca262f64e629d.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9c21883aca8cd79e305d10ea115407.png)
您最近一年使用:0次
2021-07-04更新
|
1376次组卷
|
2卷引用:天津市和平区2020-2021学年高一下学期期末数学试题
9 . 如图,在正方体
中,点
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2021/4/29/2710296903680000/2715216039821312/STEM/813e8e43d6e54486b91c2513ccf69047.png?resizew=164)
(1)求证:
平面
;
(2)求异面直线
与
所成角的余弦值.
![](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://img.xkw.com/dksih/QBM/2021/4/29/2710296903680000/2715216039821312/STEM/813e8e43d6e54486b91c2513ccf69047.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f11f1840eb8b17e7b07c3fe7e987a9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
您最近一年使用:0次
2021-05-06更新
|
3480次组卷
|
8卷引用:天津市南开中学2020-2021学年高一下学期期中数学试题
天津市南开中学2020-2021学年高一下学期期中数学试题湖南省岳阳市第一中学2020-2021学年高一下学期期末数学试题重庆市西南大学附属中学2020-2021学年高一下学期期末数学试题上海市华东师范大学第三附属中学2021-2022学年高二上学期第一次月考数学试题天津市第一中学2022-2023学年高一下学期期中数学试题(已下线)10.3 直线与平面平行的判定定理(第1课时)(已下线)第04讲线线、线面、面面平行的判定与性质(核心考点讲与练)(3)黑龙江省绥化市哈尔滨师范大学青冈实验中学校2023-2024学年高二上学期开学考试数学试题
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)
您最近一年使用:0次
2022-12-26更新
|
709次组卷
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25卷引用:天津市实验中学滨海学校2021-2022学年高二上学期10月月考数学试题
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