名校
解题方法
1 . 已知梯形
,
,
,
,
,
是线段
的中点.将
沿着
所在的直线翻折成四面体
,翻折的过程中下列选项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.![]() ![]() |
B.当直线![]() ![]() ![]() ![]() |
C.四面体![]() ![]() |
D.四面体![]() ![]() |
您最近一年使用:0次
2 . 已知
,
是不同的平面,m,n是不同的直线,以下说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.如果![]() ![]() ![]() ![]() |
B.如果![]() ![]() ![]() |
C.如果![]() ![]() ![]() |
D.如果![]() ![]() ![]() |
您最近一年使用:0次
解题方法
3 . 在四棱锥
中,
平面
为
的中点,
.
(1)求三棱锥
的体积
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc832b837e79c9186ec73d818ff2931f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d11e19c84255eb0431415c2dec553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e2942390d02efaff57473d103f7950a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/6a5d84d0-1a93-48e8-bd11-7cabb8c0c763.png?resizew=160)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d492a2248463e0c0199a25d0f76d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d4071b2a24713dfe275d0eac914045.png)
您最近一年使用:0次
解题方法
4 . 如图甲,在矩形
中,
,
是
的中点,将
沿直线
翻折后得到四棱锥
,如图乙,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/6ee5635c-587a-431c-a7e2-a9991b9d1a58.png?resizew=451)
(1)求证:
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d58da37b3d1dbd2fee75089d5ba28134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efeadd146662b5d8fe14a424138ef751.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08aa6fd52f3933cbded9ce8c880b4a10.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/6ee5635c-587a-431c-a7e2-a9991b9d1a58.png?resizew=451)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d5ee2d6fcbcad17b69997ef0741d2d.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba759550d6c10ffd2922b936888f3973.png)
您最近一年使用:0次
名校
5 . 如图,在四棱锥
中,
,
,
平面
,
,
,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/03c73120-6bd7-490e-b2ba-c578741dbcbc.png?resizew=175)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be41b05e11ba5eadaaed9a224b949774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b0382c28547d3834ca71f3f0677695.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/37002ada5d194d4d062fa3285d7d9824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9133fe4c010285dc9f6d02b0fc45461b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8c7d2b78ab2452b0a57925241dbdb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5745e2dc1d5308872c68ae932cd13ffa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/03c73120-6bd7-490e-b2ba-c578741dbcbc.png?resizew=175)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-13更新
|
244次组卷
|
3卷引用:贵州省部分中学2024届高三上学期第四次月考数学试题
解题方法
6 . 如图,在直三棱柱
中,
,D是棱
的中点,
是棱
上的一点,且
.
(1)求证:
平面
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/a55c3f663b6b205bb0d541a72e4d4759.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/b6a2e042-f6b2-4012-9695-70ecf4a76121.png?resizew=145)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebe6a446b91e73b181f9f4d56264dd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/692157e4e64f78fe0d293a1c7e343ccb.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe6225c58a4722eb10ab7ba1885dd3f.png)
您最近一年使用:0次
2023-11-26更新
|
127次组卷
|
3卷引用:贵州省部分中学2024届高三上学期第四次月考数学试题
解题方法
7 . 如图所示,在直三棱柱中,底面
是直角三角形,
且
,
,
分别为线段
和线段
上的动点,则下列说法错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/29/2d0a250c-af99-42ab-a895-870f8dd0bd88.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632e63b610953515e4f130034ca913e6.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/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/29/2d0a250c-af99-42ab-a895-870f8dd0bd88.png?resizew=169)
A.当![]() ![]() ![]() |
B.当![]() ![]() ![]() ![]() ![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
8 . 在正三棱锥
中,二面角
的平面角为
,则
与平面
所成角的正切值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec2524be492bca0d1566bf848066f10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7da05306245cd9eef92b3684d83ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
A.![]() | B.![]() | C.![]() | D.1 |
您最近一年使用:0次
解题方法
9 . 在长方体
中,
,点E在棱
上移动,若
,则点E到
的距离为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed1da7a28fb1983af25f2be2ed03cd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6c150511eead72eb15fc7284c6c363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
您最近一年使用:0次
名校
解题方法
10 . 如图,在正方体
中,
为
的中点( )
![](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/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/7/b0869e3e-9bc8-42ec-929a-03c70fabcb39.png?resizew=158)
A.![]() ![]() |
B.![]() |
C.若正方体的棱长为1,则点D到平面![]() ![]() |
D.若正方体的棱长为1,则直线![]() ![]() ![]() |
您最近一年使用:0次
2023-09-29更新
|
473次组卷
|
2卷引用:贵州省思南中学2024届高三上学期第二次月考数学试题