1 . 如图,四棱锥
的底面是矩形,
底面
为
的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/61815685-5d66-4fcb-9d51-efead60f4a75.png?resizew=159)
(1)证明:平面
平面
;
(2)若
,求直线
与平面
所成角的余弦值.
![](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/dfaefb10f82b89802bb420b3c41de1bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186e5e7efe51fd25b9e38dc0fa23de9d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/61815685-5d66-4fcb-9d51-efead60f4a75.png?resizew=159)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392469b357b12b998528499929366c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d4d36ae30487030b827ce9413b9f13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab5f236e0c248607721ff77b6ea8b6ee.png)
您最近一年使用:0次
2 . 如图,四棱锥
的底面是矩形,
底面
为
的中点,且
.
![](https://img.xkw.com/dksih/QBM/2021/11/7/2846338308415488/2849570917261312/STEM/601cd32e2e864e8d8df57396769b3f7f.png?resizew=159)
(1)证明:平面
平面
;
(2)若
,求四棱锥
的表面积.
![](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/dfaefb10f82b89802bb420b3c41de1bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186e5e7efe51fd25b9e38dc0fa23de9d.png)
![](https://img.xkw.com/dksih/QBM/2021/11/7/2846338308415488/2849570917261312/STEM/601cd32e2e864e8d8df57396769b3f7f.png?resizew=159)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392469b357b12b998528499929366c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d4d36ae30487030b827ce9413b9f13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2021-11-12更新
|
1043次组卷
|
4卷引用:云南大理、丽江、怒江2022届高三第一次复习统一检测数学(文)试题
云南大理、丽江、怒江2022届高三第一次复习统一检测数学(文)试题(已下线)解密09 立体几何初步(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(浙江专用)(已下线)专题2 空间几何体的面积运算(基础版)专题6.4 空间中的垂直关系-2021-2022学年高一数学北师大版2019必修第二册
解题方法
3 . 如图,在四棱锥
中,底面
为正方形,侧面
是正三角形,平面
平面
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/130a1798-477d-4ced-a7bd-15a1a9c838d5.png?resizew=179)
(1)证明:
平面
;
(2)若
,求点
到平面
的距离.
![](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/852aabd89edffc1b94344ff3f1f31ccd.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/130a1798-477d-4ced-a7bd-15a1a9c838d5.png?resizew=179)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0edb1508fc95765f3bb316bcb5252d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](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
解题方法
4 . 如图所示,在四棱锥
中,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/7a3a74df-bbab-4d19-b7f0-183ebb6f6709.png?resizew=161)
(1)证明:
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da59b318eb096c1effa251d0ae6212ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6281306726065e7075c579b9b66537.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/7a3a74df-bbab-4d19-b7f0-183ebb6f6709.png?resizew=161)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9396a2523d078c7fafbdcf231a9e772d.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
5 . 在如图所示的五面体ABCDEF中,△ADF是正三角形,四边形ABCD为菱形,
,EF
平面ABCD,AB=2EF=2,点M为BC中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/9b5c1f6c-1d77-4858-b68a-64aa2e16554d.png?resizew=247)
(1)在直线CD上是否存在一点G,使得平面EMG
平面BDF,请说明理由;
(2)请在下列两个条件中任选一个,求该五面体ABCDEF的体积.
①
;②EM=2.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13c772461aef1d9d715129636739748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/9b5c1f6c-1d77-4858-b68a-64aa2e16554d.png?resizew=247)
(1)在直线CD上是否存在一点G,使得平面EMG
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
(2)请在下列两个条件中任选一个,求该五面体ABCDEF的体积.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e7d379b1b8771e81cd753e7c580ec3.png)
您最近一年使用:0次
2021-06-01更新
|
678次组卷
|
2卷引用:云南省昆明市第一中学2021届高三第九次考前适应性训练数学(文)试题
6 . 如图,在四棱锥
中,四边形
为直角梯形,
,
,
,
,
,
为
的中点,且
.
![](https://img.xkw.com/dksih/QBM/2021/5/12/2719615050694656/2724276389650432/STEM/f1efc44bf27e43b387013bfa091c53b4.png?resizew=149)
(1)证明:
平面
;
(2)线段
上是否存在一点
,使得三棱锥
的体积为
?若存在,试确定点
的位置;若不存在,请说明理由.
![](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/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e35d2d3914ea17dcd17cc1b849b733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0df49b91d399a0b28d5ad86b84b1f42d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d31767eb718a0327eca546fe6a189cb.png)
![](https://img.xkw.com/dksih/QBM/2021/5/12/2719615050694656/2724276389650432/STEM/f1efc44bf27e43b387013bfa091c53b4.png?resizew=149)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/838c4e89416548d27cba1bf0748f0e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2021-05-19更新
|
766次组卷
|
4卷引用:云南省红河州2021届高三三模数学(文)试题
云南省红河州2021届高三三模数学(文)试题(已下线)一轮复习大题专练45—立体几何(探索性问题1)-2022届高三数学一轮复习河南省南阳市第一中学校2021-2022学年高三上学期第二次网上训练数学(文)试题四川省绵阳中学2022-2023学年高二上学期入学考试数学(理)试题
7 . 如图,在三棱柱
中,
,平面
平面
,四边形
为菱形.
![](https://img.xkw.com/dksih/QBM/2021/5/11/2719023923101696/2720265313722368/STEM/5dc53f00-26bf-421b-a6ba-5c09b14c5718.png?resizew=255)
(1)证明:
平面
;
(2)若
,
,
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eff0db05826cbff651faf0144904b32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://img.xkw.com/dksih/QBM/2021/5/11/2719023923101696/2720265313722368/STEM/5dc53f00-26bf-421b-a6ba-5c09b14c5718.png?resizew=255)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89195bacd53d43195e70c12b5cfa041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea848cd2aa3a464618020475097949fc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba9574b2a856772570046d87a6242be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895ac202e3507cb633337b41299ad84b.png)
您最近一年使用:0次
2021-05-13更新
|
1212次组卷
|
4卷引用:云南省昆明市2021届高三三模数学(文)试题
名校
解题方法
8 . 如图,在四棱锥
中,四边形
是矩形,点
在以
为直径的圆上,平面
平面
,
,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/9c59330f-bb43-4fcb-9be5-348b7c1773b4.png?resizew=191)
(1)证明:直线
平面
;
(2)当三棱锥
体积最大时,求直线
与直线
所成角的正弦值.
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.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/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e04f3bb93e264a556a59b5a50fd5a09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a09d03d26008b17d89e98125eff110c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89263b8efd91e2fae604f862f035dd5e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/9c59330f-bb43-4fcb-9be5-348b7c1773b4.png?resizew=191)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f979a27d3a09a17445561091e6655eb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
(2)当三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddfe0ccf24d760c77535a70c92dad145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
您最近一年使用:0次
2021-04-30更新
|
493次组卷
|
2卷引用:云南省昆明市第一中学2021届高三第八次考前适应性训练数学(文)试题
9 . 如图,在四棱锥
中,底面
为直角梯形,
,
,平面
底面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2021/4/18/2702672246120448/2706568668782592/STEM/a7e472f89a60458f9766a1ba5def384e.png?resizew=161)
(1)求证:
;
(2)求点
到平面
的距离.
![](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/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.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/142b5bb5452fa06ab3d0d556ae1b9088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d04ec5c836f560ac3c66324addde485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18120a244d3a1f9c1688bf53eb2ad775.png)
![](https://img.xkw.com/dksih/QBM/2021/4/18/2702672246120448/2706568668782592/STEM/a7e472f89a60458f9766a1ba5def384e.png?resizew=161)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2021-04-24更新
|
1116次组卷
|
3卷引用:云南省2021届高三冲刺联考数学(文)试题
10 . 如图,在三棱柱
中,四边形
是菱形,
,
,
,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2021/4/22/2705299910238208/2705963951349760/STEM/bf2e42e937f84eaf8b4f30c86eb8a15f.png?resizew=278)
(1)求证:平面
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/5f96c673a2381f118ea2d3efc0bca1f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5a97c6b563f00d0a71aef901eb7277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82343ddf8316e0a9a50c21c422bdc930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2021/4/22/2705299910238208/2705963951349760/STEM/bf2e42e937f84eaf8b4f30c86eb8a15f.png?resizew=278)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0fe22d526d1da4d61436c59e7517328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5888bec948373f3854258ad80171073d.png)
您最近一年使用:0次
2021-04-23更新
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1974次组卷
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7卷引用:云南省2021届高三二模数学(文)试题