1 . 正四棱锥
的底面
是边长为6的正方形,高为4,点
,
分别在线段
,
上,且
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/4/f1ced229-777b-4a22-9abb-d5802d635b43.png?resizew=183)
(1)求证:
平面
;
(2)求直线
与平面
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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d260c4df7b0dc180af6980d21f3371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90dd873422a87e6509a30c94ffdc23f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc90576a513851cf09cc257d588c1d55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/4/f1ced229-777b-4a22-9abb-d5802d635b43.png?resizew=183)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137fcdac119eff6ac5990b6d201615df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/193b5b41994c2a4dfa5bb0bc984061cc.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/193b5b41994c2a4dfa5bb0bc984061cc.png)
您最近一年使用:0次
解题方法
2 . 如图,四棱锥S-ABCD中,SD⊥AD,SD⊥CD,E,F分别是SC,SA的中点,O是底面正方形ABCD的中心,AB=SD=4.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/5e6b82da-68dc-4cf8-8ff2-28463ce81e20.png?resizew=186)
(1)求证:EO
平面SAD;
(2)求异面直线EO与BF所成角的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/5e6b82da-68dc-4cf8-8ff2-28463ce81e20.png?resizew=186)
(1)求证:EO
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
(2)求异面直线EO与BF所成角的余弦值.
您最近一年使用:0次
22-23高三上·河南·期末
名校
解题方法
3 . 如图,在三棱锥
中,
是正三角形,
平面
分别为
,
上的点,且
.已知
.
平面
,证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
平面
;
(2)求五面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afe94c460c04fb25d00140533301c786.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91c6d05466f4e855362a764b18552247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05689c7c002809ed5cfbd18867a39ad3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f34e4058b3e7d44696ac70e1368185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd6f80993ce27b2619335e0d83bec57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)求五面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8783bc74553bf44b61d999a0e4144bb.png)
您最近一年使用:0次
2023-01-15更新
|
864次组卷
|
5卷引用:广东省深圳市福田区红岭中学2022-2023学年高一下学期期中数学试题
广东省深圳市福田区红岭中学2022-2023学年高一下学期期中数学试题(已下线)河南省名校联盟2022-2023学年高三上学期1月新未来联考文科数学试题河南省信阳高级中学2022-2023学年高三上学期期末考试文科数学试题江西省宜春中学2023届高三下学期第二次月考数学(文)试题陕西省渭南市瑞泉中学2024届高三第六次质量检测数学(文科)试题
名校
解题方法
4 . 如图,在棱长为2的正方体
中,E为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/eec59c7f-8261-40e3-bf2c-3911f05f16f8.png?resizew=177)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/eec59c7f-8261-40e3-bf2c-3911f05f16f8.png?resizew=177)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2331bccb6ebf5b9fd639df994f575a9.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32eeb37ce111a0c102f7a5cde6875b37.png)
您最近一年使用:0次
2021-11-13更新
|
1714次组卷
|
4卷引用:广东省佛山市南海区九江中学2021-2022学年高二上学期第二次大测(月考)数学试题
名校
解题方法
5 . 如图所示,在四棱锥
中,底面
为正方形,
为侧棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/f6de2eae-ecc3-4f8e-93fd-6417f1bf9813.png?resizew=156)
(1)设经过
、
、
三点的平面交
于
,证明:
为
的中点;
(2)若
底面
,且
,求四面体
的体积.
![](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/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/f6de2eae-ecc3-4f8e-93fd-6417f1bf9813.png?resizew=156)
(1)设经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
(2)若
![](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/c3b10835116b9b777a666b438c907b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ebbb644b9bdd7be6e7ea5722924863c.png)
您最近一年使用:0次
2021-08-09更新
|
1218次组卷
|
4卷引用:广东省佛山市第一中学2021-2022学年高二上学期期中数学试题
解题方法
6 . 如图,圆锥SO的侧面展开图是半径为2的半圆,AB,CD为底面圆的两条直径,P为SB的中点.
(2)求圆锥SO的表面积.
(2)求圆锥SO的表面积.
您最近一年使用:0次
2021-08-09更新
|
1193次组卷
|
4卷引用:广东省云浮市罗定中学城东学校2022-2023学年高一下学期期中数学试题
广东省云浮市罗定中学城东学校2022-2023学年高一下学期期中数学试题浙江省衢州市2020-2021学年高一下学期期末数学试题(已下线)期末专题05 立体几何大题综合-【备战期末必刷真题】山东省菏泽外国语学校2023-2024学年高一下学期第二次月考数学试题
名校
解题方法
7 . 如图,在四棱锥
中,底面
为正方形,且
底面
.
![](https://img.xkw.com/dksih/QBM/2021/7/2/2755682196815872/2756283809243136/STEM/d5539b92-dcda-42c7-8090-ad72330dd1a8.png?resizew=235)
(1)求证:平面
平面
;
(2)若
为棱
的中点,在棱
上求一点F,使
平面
.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2021/7/2/2755682196815872/2756283809243136/STEM/d5539b92-dcda-42c7-8090-ad72330dd1a8.png?resizew=235)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)若
![](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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8ccd4181f956f6e0140bf0ab8f0716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37793a3a810e823e10c340986f55ddd.png)
您最近一年使用:0次
2021-07-03更新
|
2297次组卷
|
4卷引用:广东省梅州市大埔县田家炳实验中学2023届高三上学期第一次月考(8月)数学试题
广东省梅州市大埔县田家炳实验中学2023届高三上学期第一次月考(8月)数学试题全国2021届高三高考数学(文)信息试题(一)(已下线)7.2 空间几何中的垂直(精讲)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)四川省乐山沫若中学2022-2023学年高二上学期第二次月考(期中考试)数学(文)试题
8 . 如图,在三棱柱
中,
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcca4982eda404a0cd8193e35a5be6b2.png)
,
分别是
的中点
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/007f2429-49cb-472e-a801-17e7c8adcbb9.png?resizew=147)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcca4982eda404a0cd8193e35a5be6b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450176ba93397527fc3520c55dd1476a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/007f2429-49cb-472e-a801-17e7c8adcbb9.png?resizew=147)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92bced6bf70db7229db85f2b10339431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
您最近一年使用:0次
2020-12-05更新
|
1235次组卷
|
3卷引用:广东省紫金县中山高级中学2020-2021学年高二上学期期中数学试题
名校
9 . 如图,在直三棱柱
中,底面
是直角三角形,且
,
,其中
,
分别是
,
上的点且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/54101104-b394-4628-8192-03563c15682c.png?resizew=156)
(1)求证:MN
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1bcc181aa254e91bfc333c966e4637d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00566b498fa4a541e154ffcf2c19d0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b462c21e9d780337650cd97614d8327d.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/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423cd617e81adcbab86786cbe3cb6ade.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/54101104-b394-4628-8192-03563c15682c.png?resizew=156)
(1)求证:MN
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3fb82553d568ea8aae9d0dd89ae1ca2.png)
您最近一年使用:0次
2020-10-18更新
|
404次组卷
|
2卷引用:广东省深圳市红岭中学2020-2021学年高二上学期期中数学试题
名校
解题方法
10 . 如图,三棱柱
中,D是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/03656881-a632-4480-aef3-10b67aaffd28.png?resizew=193)
(1)证明:
面
;
(2)若△
是边长为2的正三角形,且
,
,平面
平面
.求平面
与侧面
所成二面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/03656881-a632-4480-aef3-10b67aaffd28.png?resizew=193)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
(2)若△
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad91719bd5fdc1b2d3d5298f2f44cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd426c9273efec5173db056d1d099f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
您最近一年使用:0次
2020-08-17更新
|
1717次组卷
|
7卷引用:广东省广州市执信中学2023届高三上学期第二次月考数学试题