名校
1 . 如图,在四棱锥
中,底面ABCD为矩形,
为等腰直角三角形,
,
,F是BC的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987762007375872/2991518963679232/STEM/f1b037ee62af47439dd41b4de8abfea7.png?resizew=248)
(1)在AD上是否存在点E,使得平面
平面
,若存在,求出点E的位置;若不存在,请说明理由.
(2)
为等边三角形,在(1)的条件下,求直线SE与平面SBC所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f72900e99805cc33b49290b34fdea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a7555f33784cfb078301c4cbed6aee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d0e0e56c0f262ae9f3bb2c24ea6f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93edbd735d79524f463085a4e9093bd.png)
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987762007375872/2991518963679232/STEM/f1b037ee62af47439dd41b4de8abfea7.png?resizew=248)
(1)在AD上是否存在点E,使得平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac19e63ccb9088f59272c39895531b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c1b24a028b82ec5a3a9917d1906c586.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在梯形ABCD中,
,点E为AB中点,将
沿直线DE向上折起到
的位置(平面
与平面ABCD不重合).在折叠的过程中,给出下列结论:
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978517077884928/2978759161159680/STEM/98c37c0a-27e2-4ffe-bc78-c606cdb8a77f.png?resizew=204)
①任意时刻都有
∥平面
;
②任意时刻都有平面
平面
﹔
③存在某个位置,使得
﹔
④当平面
平面BCDE时,直线AD与平面
所成角的正弦值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
其中所有正确结论的序号是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ee449052976620d684ac52cd01fde1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a49088d8f4cae827c70a903191f7a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5df468bd3a6550726fe28c570d944d.png)
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978517077884928/2978759161159680/STEM/98c37c0a-27e2-4ffe-bc78-c606cdb8a77f.png?resizew=204)
①任意时刻都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5df468bd3a6550726fe28c570d944d.png)
②任意时刻都有平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c309e58bf083bad13abd549720a63a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9020f29b841a713951c5bdeab9039867.png)
③存在某个位置,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e2ee4ddbaed4345f6dbc4ac1c43e78f.png)
④当平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7068c82a4a2f1522e06d23f284b69af2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b216301e158565908ea0de16826efc2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
其中所有正确结论的序号是
您最近一年使用:0次
2022-05-13更新
|
1847次组卷
|
3卷引用:四川省泸州市泸县第二中学2022届高考仿真考试(一)文科数学试题
名校
3 . 如图,四棱锥
中,底面
为平行四边形,
,
,
分别是棱
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/9/2975773885079552/2977278949031936/STEM/b99776874ca1449e85a2e3ef7243723a.png?resizew=204)
(1)证明:
平面
;
(2)若
,
,求
与平面
所成角的大小.
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/2022/5/9/2975773885079552/2977278949031936/STEM/b99776874ca1449e85a2e3ef7243723a.png?resizew=204)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2597b5554284e275367c25529c6750f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cccb623839e5e6efb31056b83401763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32061e4f6ae667ddd700299a681d4240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
您最近一年使用:0次
2022-05-11更新
|
690次组卷
|
4卷引用:四川省泸州市叙永第一中学校2022-2023学年高二上学期第一学月教学质量检测数学(理)试题
名校
4 . 如图,在棱长为2的正方体ABCD−A1B1C1D1中,P为线段BC1上的动点,下列说法不正确的是_______________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/df565828-749e-4d20-97d3-31ec43a3e5d0.png?resizew=161)
①对任意点P,DP∥平面AB1D1
②三棱锥P-A1DD1的体积为4
③线段DP长度的最小值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
④存在点P,使得DP与平面ADD1A1所成角的大小为
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/df565828-749e-4d20-97d3-31ec43a3e5d0.png?resizew=161)
①对任意点P,DP∥平面AB1D1
②三棱锥P-A1DD1的体积为4
③线段DP长度的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
④存在点P,使得DP与平面ADD1A1所成角的大小为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
您最近一年使用:0次
2021-11-28更新
|
256次组卷
|
2卷引用:四川省泸州市古蔺县蔺阳中学校2023-2024学年高二上学期11月月考数学试题
名校
解题方法
5 . 如图,在正方体
中,点O为线段BD的中点.设点
在线段
上,直线
与平面
所成的角为
,则
的取值范围是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/e7144d0e-dd2c-4dfd-af8b-a67d31714e1c.png?resizew=167)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/e7144d0e-dd2c-4dfd-af8b-a67d31714e1c.png?resizew=167)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2021-10-19更新
|
365次组卷
|
7卷引用:四川省泸州市泸县第五中学2020-2021学年高三上学期第一次月考数学(理)试题
名校
6 . 如图,四棱锥
的底面是正方形,
平面
,
.点
是
的中点,作
,交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/74e22484-1aa4-4ec2-8b98-0aa3047fc35a.png?resizew=183)
(1)设平面
与平面
的交线为
,试判断直线
与直线
的位置关系,并给出证明;
(2)求平面
与平面
所成的较小的二面角的余弦值;
(3)求直线
与平面
所成角的正切值.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](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/3b7b9bf7332256ac478041957fa2a55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/74e22484-1aa4-4ec2-8b98-0aa3047fc35a.png?resizew=183)
(1)设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2021-08-30更新
|
883次组卷
|
4卷引用:四川省泸州市泸县第五中学2022-2023学年高一下学期期末数学试题
7 . 已知六棱锥P﹣ABCDEF的底面是正六边形,PA⊥平面ABC,PA=2AB,则下列命题中错误的是( )
A.AE⊥平面PAB |
B.直线PD与平面ABC所成角为45° |
C.平面PBC与平面PEF的交线与直线AD不平行 |
D.直线CD与PB所成的角的余弦值为![]() |
您最近一年使用:0次
2021-06-13更新
|
540次组卷
|
4卷引用:四川省泸县第一中学2023届高三二诊模拟考试数学(文)试题
四川省泸县第一中学2023届高三二诊模拟考试数学(文)试题四川省泸县第一中学2023届高三二诊模拟考试数学(理)试题四川省自贡市2021届高三三模数学(理)试题(已下线)考点23 空间点、直线、平面之间的位置关系-备战2022年高考数学(理)一轮复习考点微专题
8 . 如图,在正方体
中,下面结论错误的是( )
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718915193741312/2725367494868992/STEM/2a2637df-1bbf-47c8-82f6-0422fd076805.png?resizew=215)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718915193741312/2725367494868992/STEM/2a2637df-1bbf-47c8-82f6-0422fd076805.png?resizew=215)
A.![]() ![]() | B.![]() ![]() |
C.异面直线![]() ![]() ![]() | D.直线![]() ![]() ![]() |
您最近一年使用:0次
2021-05-20更新
|
1432次组卷
|
5卷引用:四川省泸州市泸县第一中学2021-2022学年高二下学期第一学月(3月)考试文科数学试题
四川省泸州市泸县第一中学2021-2022学年高二下学期第一学月(3月)考试文科数学试题四川省泸州市泸县第一中学2021-2022学年高二下学期第一学月(3月)考试理科数学试题河南省郑州市2021届高三三模文科数学试题(已下线)考点19 空间点、直线、平面之间的位置关系-备战2022年高考数学(文)一轮复习考点微专题安徽省滁州市新锐私立学校2022届高三下学期5月模拟检测理科数学试题
解题方法
9 . 如图,在正方体
中,
,
分别为
,
的中点,
,
分别为
,
的中点,对于下列四个结论:
①二面角
的大小为
;
②三条直线
,
,
有公共点;
③直线
上存在点
使
,
,
三点共线;
④直线
与平面
所成角的正切值为2.
![](https://img.xkw.com/dksih/QBM/2021/1/22/2641846476193792/2645357736435712/STEM/2b5c156a500048808a7c9df253b4cc4f.png?resizew=190)
其中错误结论的个数为( )
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
①二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0830c440cb5f1b816d17dcdebdba71a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
②三条直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
③直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/1dde8112e8eb968fd042418dd632759e.png)
④直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2021/1/22/2641846476193792/2645357736435712/STEM/2b5c156a500048808a7c9df253b4cc4f.png?resizew=190)
其中错误结论的个数为( )
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
名校
解题方法
10 . 已知在三棱锥
中,
,
,
两两互相垂直,
,
,
,点
为三棱锥
的外接球的球心,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0dcd83044eabde069d31d6d95ce82fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df3b2901ad26337818f75e81448ebb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/818309e7b9a67c54ab1530fdb4b0edc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.球![]() ![]() |
B.异面直线![]() ![]() ![]() |
C.直线![]() ![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
2020-12-20更新
|
156次组卷
|
2卷引用:四川省泸县第五中学2023-2024学年高二上学期10月月考数学试题