名校
1 . 如图,在正四棱锥
中,
,已知
,
,其中
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/23/4df670e4-b610-45a4-8d38-e7463c86e48a.png?resizew=165)
(1)证明:
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be56dffe9a3e5d3e67aefca32248cf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be41b05e11ba5eadaaed9a224b949774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c0f067a2a348ceb24a408f82992eab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e426224c3a3ce9bb5a731eed81c40.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/23/4df670e4-b610-45a4-8d38-e7463c86e48a.png?resizew=165)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d1a0960168db81133542d3c143bdf0d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8e83915a02eae9969fba7c73ee6e2b.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,四棱锥
的底面是矩形,PA⊥底面ABCD,
,
,M,N分别为CD,PD的中点,K为PA上一点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/36dc1423-0da9-4eac-9718-9d3739db7b90.png?resizew=160)
(1)证明:B,M,N,K四点共面;
(2)若PC与平面ABCD所成的角为
,求平面BMNK与平面PAD所成的锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c406e7d1e7977dd5b30ef81cfdc8e8d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f79ca4a12066237fd4eba14dba3e24.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/36dc1423-0da9-4eac-9718-9d3739db7b90.png?resizew=160)
(1)证明:B,M,N,K四点共面;
(2)若PC与平面ABCD所成的角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3427311203b1958b9ff89084c66a09a.png)
您最近一年使用:0次
2023-02-19更新
|
895次组卷
|
5卷引用:贵州省毕节市2023届高三年级诊断性考试(一)数学(理)试题
贵州省毕节市2023届高三年级诊断性考试(一)数学(理)试题四川省南充高级中学2022-2023学年高三下学期第九次月考数学理科试题(已下线)专题14立体几何(解答题)四川省阆中中学校2023届高三全景模拟卷(一)理科数学试题(已下线)专题19 空间几何解答题(理科)-3
解题方法
3 . 如图,四棱锥
的底面是矩形,
底面
,
,
分别为
,
的中点,
与
交于点
,
,
,
为
上一点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/92de9309-06ce-48d2-b5f9-93c8e17fbbeb.png?resizew=161)
(1)证明:
,
,
,
四点共面;
(2)求证:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76a935359a3c5113c218edd0d0ce5dcb.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c406e7d1e7977dd5b30ef81cfdc8e8d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a26427f7523d2a63e760b83340d3dcb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/92de9309-06ce-48d2-b5f9-93c8e17fbbeb.png?resizew=161)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ee7e6c0b8caf5c276776d3e968e851f.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,在棱长为
的正方体
中,
为棱
的中点,
,
分别是棱
,
上的动点(不与顶点重合).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/7230b3f9-55f8-4ce6-9945-25efc93a341a.png?resizew=180)
(1)作出平面
与平面
的交线(要求写出作图过程),并证明:若平面
平面
,则
;
(2)若
,
均为其所在棱的中点,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](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/56f7ba05c54b3de1f4378f7c8eb58328.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/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/7230b3f9-55f8-4ce6-9945-25efc93a341a.png?resizew=180)
(1)作出平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb06405623edb5c9d5f7350d79dc76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8b5a6dbcf05f572f83f51abf7d668c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ecd2020a3f7767e54ab47e640399a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d47e5be88e89d0d042c56d2d6942b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c6b8443e6525024643e9d87c45640f.png)
(2)若
![](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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d47e5be88e89d0d042c56d2d6942b0.png)
您最近一年使用:0次
5 . 已知矩形
中,
,
分别在
上,且
,沿
将四边形
折成四边形
,使点
在平面
上的射影
在直线
上,且
.
![](https://img.xkw.com/dksih/QBM/2016/11/16/1573153395990528/1573153402322944/STEM/cc3b5b35dba74f71a36744bb5a6b190c.png)
(1)求证:
平面
;
(2)求
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a19e5964687db92aa9f346ab863ff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d93949d8a15aca4e79cedb978590571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc799080c04e01ce595151e11d957c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedde879f99aed69d745d5ec8fe62084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d205218becb6f101ac2a2409ba9b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e2a422324c123af2cf1d7553e17153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f515c607a8cfbfc03b0e3718c1863c.png)
![](https://img.xkw.com/dksih/QBM/2016/11/16/1573153395990528/1573153402322944/STEM/cc3b5b35dba74f71a36744bb5a6b190c.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561af6573f04eb7019025b5ee1e11a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09c6b9b6dc6054d2e244051da08f7ea0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d28b9fec2969b3313d4245cdc4c290.png)
您最近一年使用:0次
6 . 已知矩形
中,
,
分别在
上,且
,沿
将四边形
折成四边形
,使点
在平面
上的射影
在直线
上,且
.
![](https://img.xkw.com/dksih/QBM/2016/11/16/1573153105543168/1573153111842816/STEM/0f663a4fd27141249cc3149201c9f9e9.png)
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a19e5964687db92aa9f346ab863ff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d93949d8a15aca4e79cedb978590571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc799080c04e01ce595151e11d957c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedde879f99aed69d745d5ec8fe62084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d205218becb6f101ac2a2409ba9b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e2a422324c123af2cf1d7553e17153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f515c607a8cfbfc03b0e3718c1863c.png)
![](https://img.xkw.com/dksih/QBM/2016/11/16/1573153105543168/1573153111842816/STEM/0f663a4fd27141249cc3149201c9f9e9.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561af6573f04eb7019025b5ee1e11a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09c6b9b6dc6054d2e244051da08f7ea0.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4168f76bf73343225a3d27ea2a734e.png)
您最近一年使用:0次
7 . 如图,已知斜三棱柱ABC-A1B1C1中,AB=AC,D为线段BC的中点
![](https://img.xkw.com/dksih/QBM/2016/10/17/1573072334340096/1573072340107264/STEM/93278a12c5c040f08e73f99130ba4dcc.png)
(I)求证院A1B∥平面ADC1
(II)若平面ABC⊥平面BCC1B1,求证:AD⊥DC1
![](https://img.xkw.com/dksih/QBM/2016/10/17/1573072334340096/1573072340107264/STEM/93278a12c5c040f08e73f99130ba4dcc.png)
(I)求证院A1B∥平面ADC1
(II)若平面ABC⊥平面BCC1B1,求证:AD⊥DC1
您最近一年使用:0次
8 . 如图,四棱锥
中,底面
是矩形,
底面
,
,
,点
是
的中点,点
在边
上移动.
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/8bf4ccac26604d1096ed51e860894636.png)
(Ⅰ)点
为
的中点时,试判断
与平面
的位置关系,并说明理由;
(Ⅱ)当
为何值时,
与平面
所成角的大小为
.
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/362811032fb9417cb8f9e266144e7af7.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/610bbbd30b784771ad48d1b6bcdc4706.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/1dc386ec46654e25a0f428ff46758d1b.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/610bbbd30b784771ad48d1b6bcdc4706.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/148e41e05d894d758826e48ec28c7836.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/c001314310d04fad90abe482dd2f130c.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/0698106375b64ee5b72fd9bf8ed69bd6.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/32dd8c65fee946c0a43ab77a738a647a.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/d23caa614f644356b50991f6f50e2eba.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/a2839913e0b045f1bf76d2881750711f.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/8bf4ccac26604d1096ed51e860894636.png)
(Ⅰ)点
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/d23caa614f644356b50991f6f50e2eba.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/a2839913e0b045f1bf76d2881750711f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37793a3a810e823e10c340986f55ddd.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/9fef9ec221434a9192379fe4644d51ec.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/532c4fde80af4aa6abcd73d5523bece5.png)
![](https://img.xkw.com/dksih/QBM/2016/5/18/1572638321197056/1572638327185408/STEM/4b3ba796e51a4f92bc93af2537e12b5a.png)
您最近一年使用:0次
9 . 在直三棱柱ABC﹣A1B1C1中,∠BAC=90°,D,E分别为CC1和A1B1的中点,且A1A=AC=2AB=2.
![](https://img.xkw.com/dksih/QBM/2016/3/15/1572540523315200/1572540529385472/STEM/79ec55fe77d64eb6b059e4cc7d66b70c.png)
(1)求证:C1E∥面A1BD;
(2)求点C1到平面A1BD的距离.
![](https://img.xkw.com/dksih/QBM/2016/3/15/1572540523315200/1572540529385472/STEM/79ec55fe77d64eb6b059e4cc7d66b70c.png)
(1)求证:C1E∥面A1BD;
(2)求点C1到平面A1BD的距离.
您最近一年使用:0次
10 . 如图,三棱锥P-ABC中,PA⊥平面ABC,AB⊥BC,D为PB的中点,E为PC的中点.
![](https://img.xkw.com/dksih/QBM/2016/2/29/1572505075499008/1572505081757696/STEM/d05384891b3645f1be79ec79725f677e.png)
(Ⅰ)求证:BC∥平面ADE;
(Ⅱ)若PA=AB=BC=2,求三棱锥A-BDE的体积.
![](https://img.xkw.com/dksih/QBM/2016/2/29/1572505075499008/1572505081757696/STEM/d05384891b3645f1be79ec79725f677e.png)
(Ⅰ)求证:BC∥平面ADE;
(Ⅱ)若PA=AB=BC=2,求三棱锥A-BDE的体积.
您最近一年使用:0次