名校
解题方法
1 . 在三棱锥
中,侧面所在平面与平面
的夹角均为
,若
,且
是直角三角形,则三棱锥
的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41a48250ebe4a625f0839d076b61c31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
您最近一年使用:0次
2024-04-24更新
|
1082次组卷
|
2卷引用:广东省韶关市2024届高三综合测试(二)数学试题
2 . 四面体的棱长只能是1或3,但该四面体不是正四面体,则该四面体的体积最大值为______ .
您最近一年使用:0次
3 . 如图所示,正方体
的棱长为1,
,
分别是棱
,
的中点,过直线
的平面分别与棱
,
交于点
,
,以下四个命题中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.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/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ecac2dad4cffdd971fd23deacff3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/31/49d10819-c670-47ba-b2ab-553033f3f7e9.png?resizew=158)
A.四边形![]() | B.平面![]() ![]() |
C.四棱锥![]() ![]() | D.四边形![]() ![]() |
您最近一年使用:0次
2023-05-29更新
|
675次组卷
|
3卷引用:广东省韶关市2023届高三下学期4月综合测试(二)数学试题
4 . 已知正方体
,设
是棱
的中点,则( )
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
A.![]() ![]() ![]() |
B.![]() |
C.平面![]() ![]() ![]() |
D.三棱锥![]() ![]() |
您最近一年使用:0次
2022-11-24更新
|
1211次组卷
|
4卷引用:广东省韶关市2023届高三上学期综合测试(一)数学试题
5 . 在三棱锥
中,
平面
,且
,
,
,当三棱锥
的体积最大时,此三棱锥的外接球的表面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb2ccf062423ab6fb5b2dccec646930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
您最近一年使用:0次
2019-02-12更新
|
1275次组卷
|
2卷引用:【市级联考】广东省韶关市2019届高三1月调研考试数学理试题
6 . 一空间几何体的三视图如下图所示,则该几何体的体积为
![](https://img.xkw.com/dksih/QBM/2018/7/26/1996916706484224/2000855973470208/STEM/48bbcac6c4cc4059b44e0fef05920ecf.png?resizew=203)
![](https://img.xkw.com/dksih/QBM/2018/7/26/1996916706484224/2000855973470208/STEM/48bbcac6c4cc4059b44e0fef05920ecf.png?resizew=203)
A.1 | B.3 | C.6 | D.2 |
您最近一年使用:0次
2018-08-01更新
|
735次组卷
|
8卷引用:2012届广东省韶关市高三下学期第二次调研考试理科数学试卷
解题方法
7 . 如图,点
是平行四边形
所在平面外一点,
是等边三角形,点
在平面
的正投影
恰好是
中点.
![](https://img.xkw.com/dksih/QBM/2017/4/19/1669077648162816/1669358889164800/STEM/2a0f6d1ac2e54aceaa65cdfd0a19a020.png?resizew=245)
(1)求证:
平面
;
(2)若
,
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/2017/4/19/1669077648162816/1669358889164800/STEM/2a0f6d1ac2e54aceaa65cdfd0a19a020.png?resizew=245)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826bf6fa3706921b77ad0eb4fcc206bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ce152ae4cea885a04e753b0d7378b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2017-04-19更新
|
987次组卷
|
2卷引用:2017届广东省韶关市高三4月高考模拟测试数学文试卷
解题方法
8 . 如图,
是边长为
的正方形,
是矩形,平面
平面
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571997494706176/1571997500645376/STEM/6cd1191b00294d99b5b66c962acc73ea.png?resizew=204)
(1)求证:
//平面
;
(2)若三棱锥
的体积为
,求三棱柱
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571997494706176/1571997500645376/STEM/6cd1191b00294d99b5b66c962acc73ea.png?resizew=204)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24dc8826770249f3996b8a188c03da92.png)
(2)若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a49cc2d93441c0621c8addad830902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31da7291140e430a11e2a10cc6cdefbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02cfa6b4db3a67fcd3c169fd8502a66d.png)
您最近一年使用:0次
9 . 如图,
是边长为
的正方形,
是矩形,平面
平面
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996939534336/1571996945276928/STEM/665bc6a0d55645719dd051307a199ec7.png?resizew=317)
(1)求证:
平面
;
(2)若三棱锥
的体积为
,求二面角
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996939534336/1571996945276928/STEM/665bc6a0d55645719dd051307a199ec7.png?resizew=317)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81fa367ec317fe2a30142e1c30cce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24dc8826770249f3996b8a188c03da92.png)
(2)若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a49cc2d93441c0621c8addad830902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31da7291140e430a11e2a10cc6cdefbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/590b0cdc7ab90ec8f4099210b522de4b.png)
您最近一年使用:0次
10 . 如图所示的多面体中,四边形
是菱形、
是矩形,
面
,
.
![](https://img.xkw.com/dksih/QBM/2018/6/17/1969253939298304/2001732264640512/STEM/2bc02c24fc45494d8201d6e62651ec0a.png?resizew=217)
(1)求证:平面
平面
;
(2)若
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.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/7bb8fb552b9e21dbaba74d11aa747790.png)
![](https://img.xkw.com/dksih/QBM/2018/6/17/1969253939298304/2001732264640512/STEM/2bc02c24fc45494d8201d6e62651ec0a.png?resizew=217)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c6944008168646d5f71fe3a930b0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7307a23176550cded02f4e9a6e2ca014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d48c65f7bcba6ef884d2884a9e7c1489.png)
您最近一年使用:0次
2016-12-03更新
|
4628次组卷
|
11卷引用:2014届广东省韶关市高三调研测试文科数学试卷
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