名校
解题方法
1 . 直三棱柱
中,点
为棱
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/3b89e4b4-a393-4700-a8e1-d8b4bd88c5db.png?resizew=146)
(1)求证:
平面
;
(2)求证:
平面
;
(3)判断是否存在经过
的平面
满足
,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96a6b20a35af7755e5d90789ea862da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429228f882da65a8e0064c88d02b8e40.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/3b89e4b4-a393-4700-a8e1-d8b4bd88c5db.png?resizew=146)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1496afecd92a619fbe5e9b736f06f4e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73845d4d663b3de0b281611fe2c762fe.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(3)判断是否存在经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2264c99c13bf628914ab68f401fd874.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在棱长为1的正方体
中,E是棱
上的一个动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/61e03167-4be3-4fb3-83fc-a0b585155d05.png?resizew=182)
(1)判断三棱锥
的体积是否为定值,若是求出其体积,若不是说明理由;
(2)是否存在点E,使得
平面
,若存在请找出点E的位置,若不存在,说明理由;
(3)过点
和C作正方体的截面
.①判断截面
的形状,并求出截面面积的最小值;②当截面
的面积取最小值时,在线段
上是否存在一个动点M,使得
,若存在求出M的位置,若不存在请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/61e03167-4be3-4fb3-83fc-a0b585155d05.png?resizew=182)
(1)判断三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bcd4d16a1f2e89bb43fd1731a05ab1.png)
(2)是否存在点E,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565133e91e3ace2b2187cfc6f1db5be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a83c0b8db2205a6815811aa4ff5390f.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc3a8c6f4ea0f3d2d1dd08940acde537.png)
您最近一年使用:0次
3 . 如图,在多面体
中,四边形
是正方形,
平面
,平面
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/16/ec19cdba-eec0-4ae9-999f-7a4454aba794.png?resizew=212)
(1)求多面体
体积的最大值;
(2)若
,求直线
与平面
所成角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a38e6c6dfde2b19b6b47f35a439a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d740c5dcc2122cb8767b512abb429f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a989aa942219970ec11ccd6ab186d69b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b0f24915e2c414825b0f9a304e106fa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/16/ec19cdba-eec0-4ae9-999f-7a4454aba794.png?resizew=212)
(1)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ce838f38419e8781d63b3417cac5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8257b6bd25104e07b9ad935c0a3aac4.png)
您最近一年使用:0次
解题方法
4 . 如图①,在等腰梯形
中,
,
,
,E是
的中点.如图②,将
沿
折起,使
平面
,其中M是
的中点,连接
,F是
的中点,P是棱
的中点,连接
,连接
,交
于点N,连接
.
;
(2)求证:
平面
;
(3)判断
能否垂直于平面
,并说明理由.
![](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/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7767d492158189b23af332a8016ed37d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bfad3f7e65188bcf7f62ea5acdbf4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2013303974d530fce9a9930938f4c2b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d012bf523a057d6534d6fb4e177e95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c51c25b65a37b676ae3c3b71c29f9b.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9edd2e61629ddf4c758808838d4478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bfad3f7e65188bcf7f62ea5acdbf4a.png)
(3)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
5 . 如图
,等腰梯形
中,
,
,
,
为
中点,
为
中点.将
沿
折起到
的位置,如图
.
(1)证明:
平面
;
(2)若平面
平面
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.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/f526235f13fe56495391abb823a1be07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc9d52427f4ae96a6191ebd1368a5ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438bf2134641f9950932bd667188d63c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/11/28b497b1-b73d-4618-93de-171bc835613e.png?resizew=417)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/653078cf75cab77eee1417ad02d9b76d.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a832b538d0bd5a0051d485fae371a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b3351b2e5de2240185f415ffb26273.png)
您最近一年使用:0次
2023-08-10更新
|
650次组卷
|
7卷引用:河北省张家口市2019-2020学年高三11月阶段检测数学(文)试题
河北省张家口市2019-2020学年高三11月阶段检测数学(文)试题2020届湖南省长沙市雅礼中学高三第六次月考数学(文)试题浙江省宁波市海曙区2023届高三下学期2月开学考试数学试题江西省南昌市八一中学2023届高考三模理科数学试题(已下线)第04讲 直线、平面垂直的判定与性质(练习)(已下线)考点9 垂直的判定与性质 2024届高考数学考点总动员(已下线)专题8.11 立体几何初步全章十四大压轴题型归纳(拔尖篇)-举一反三系列
名校
解题方法
6 . 如图,正三棱柱
中,E为AC的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978310025216000/2978749583515648/STEM/5eb6135b-dc1e-4325-83a3-02828dddce15.png?resizew=143)
(1)求证:
平面
;
(2)若BB1=BA=a,求异面直线AB1与EC1所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978310025216000/2978749583515648/STEM/5eb6135b-dc1e-4325-83a3-02828dddce15.png?resizew=143)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c920d02068d0e63ffdab70786c526d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba99277e38f8d9f817a9d7db8198219.png)
(2)若BB1=BA=a,求异面直线AB1与EC1所成角的余弦值.
您最近一年使用:0次
解题方法
7 . 如图,在四棱锥
中,
,
是边长为
的正三角形,平面
平面
,
,点
,
,
分别是线段
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/d6b27c4c-0e3e-468f-b0b5-e3b6ab241445.png?resizew=193)
(1)求证:点
在平面
内;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb99353e3076643c832c8973ac8a6c1.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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/d6b27c4c-0e3e-468f-b0b5-e3b6ab241445.png?resizew=193)
(1)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e375fa6cd4a05814744169b157686077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8504651146697b0ecca4f789790d41ed.png)
您最近一年使用:0次
解题方法
8 . 《九章算术》中将四个面都为直角三角形的几何体称为鳖臑(biē nào).如图,△ABC是直角三角形,
,
平面ABC.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/e81b781e-fa10-4ebb-89eb-684b910a5af0.png?resizew=154)
(1)几何体
是否为鳖臑?说明理由;
(2)若H是PB上的点,且
,试找出图中所有和AH垂直的棱.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/e81b781e-fa10-4ebb-89eb-684b910a5af0.png?resizew=154)
(1)几何体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
(2)若H是PB上的点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c61cebb52b5b776b15c9783cbb6d05bf.png)
您最近一年使用:0次
解题方法
9 . 如图,在四棱锥P-ABCD中,底面ABCD是正方形,
,
,若在这个四棱锥内放一个球,求球的最大半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5817398700b34e865210edce344ca61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e121e5d010ca075d1fe1b8c8a2bd38.png)
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962990599585792/2964208682549248/STEM/51f71e39-dca6-4f2f-92de-a83f26e09c2b.png?resizew=233)
您最近一年使用:0次
10 . 已知直三棱柱
中,D为
的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961617978122240/2962970583605248/STEM/5acc718cf82545d08691ff635b3ed8c1.png?resizew=147)
(1)若
,
,
,求点C到平面ABD的距离;
(2)从下面①②③中选取两个作为条件,证明另外一个成立.
①
;②
;③
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961617978122240/2962970583605248/STEM/5acc718cf82545d08691ff635b3ed8c1.png?resizew=147)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
(2)从下面①②③中选取两个作为条件,证明另外一个成立.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f35646cb29fafd1e1a214b69e4f22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd48fe75d71e5658e92873326e2e3a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f9b0421e0b4d74b22df706578b74a58.png)
您最近一年使用:0次