1 . 如图,正方体
的棱长为
,线段
上有两个动点
,
,且
,点
,
分别为
,
的中点,
在侧面
上运动,且满足
平面
,以下命题错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.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/f115f2683c0422042f1846450885e7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1201f620583e5ee23473a5fdb75ca299.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1ce401a2e0f1697ac0b3318a403f70.png)
A.![]() |
B.多面体![]() |
C.侧面![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
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2024-03-03更新
|
393次组卷
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3卷引用:四川省成都市石室中学2023-2024学年高一下学期开学考试数学(理科)试卷
四川省成都市石室中学2023-2024学年高一下学期开学考试数学(理科)试卷四川省成都市石室中学2023-2024学年高一下学期开学考试数学(文科)试卷(已下线)第8章 立体几何初步 单元综合检测(难点)-《重难点题型·高分突破》(人教A版2019必修第二册)
名校
2 . 如图,在长方体
中,
,动点
分别在线段
和
上.给出下列四个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/8a908862-212f-465a-90d5-c8f998da91ec.png?resizew=160)
①四面体
的体积为
;
②
可能是等边三角形;
③当
时,
;
④有且仅有两组
,使得三棱锥
的四个面均为直角三角形.
其中所有正确结论的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbff493a22d755c6b473513e2e39ecc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/8a908862-212f-465a-90d5-c8f998da91ec.png?resizew=160)
①四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a126cb68f3881b924d6c728811082e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f592a27e950b06ca0f39b1b30df513.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19fbe4c23e34981ee34afffcac2ea586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89ec2be036793d17227f6275009332a6.png)
④有且仅有两组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7b9d439771d35f8ff433223b6f5785.png)
其中所有正确结论的序号是
您最近一年使用:0次
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解题方法
3 . 已知正方体
的棱长为
,点
分别是棱
,
的中点,点
是侧面
内一点
含边界
若
平面
,则下列说法正确的有( )
A.点![]() | B.三棱锥![]() |
C.![]() ![]() | D.直线![]() ![]() ![]() |
您最近一年使用:0次
2024-03-01更新
|
633次组卷
|
3卷引用:江苏省高邮市2024届高三下学期期初学情调研测试数学试题
江苏省高邮市2024届高三下学期期初学情调研测试数学试题(已下线)第三章 空间轨迹问题 专题六 立体几何轨迹中的范围、最值问题 微点1 立体几何轨迹中的范围、最值问题【培优版】江苏省连云港高级中学2023-2024学年高二下学期第一次月考数学试卷
4 . 如图,在正方体
中,
,
,
分别为
,
的中点,点
满足
,
,
.下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/00c78e98-7bfd-4fcb-83bb-f91c5c3eede0.png?resizew=159)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.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/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b1e5828ba34bfa9c839182baf52509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79296cd4046a71e163a8f3e647a176ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/994fe2e2ccff825adfe4567a84e0fd79.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/00c78e98-7bfd-4fcb-83bb-f91c5c3eede0.png?resizew=159)
A.若![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
解题方法
5 . 已知正方体
的棱长为4,E,F,G分别是棱
,
,
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
A.![]() ![]() |
B.![]() ![]() ![]() |
C.平面![]() ![]() |
D.三棱锥![]() ![]() |
您最近一年使用:0次
名校
解题方法
6 . 如图所示,直三棱柱
的体积为2,
的面积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/a8bb28cb-719f-4f0a-ab75-56d1c3f8653e.png?resizew=144)
(1)求
到平面
的距离;
(2)设
为
的中点,
,平面
平面
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e827641feb4179bca7033ed8760bf728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/a8bb28cb-719f-4f0a-ab75-56d1c3f8653e.png?resizew=144)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeed487430a5b8a330f2d0c52166521a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dee56b9f36ba8f76fe67b76383636b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
您最近一年使用:0次
名校
7 . 如图,在三棱柱
中,底面
侧面
.
平面
;
(2)若
,求三棱锥
的体积;
(3)在(2)的条件下,求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b3e80d3a58ac3cf00b42f41747c311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d8a9d64ad3c8cba28840b41ed7837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e3c9e7c05de9838c0c5d762720d3ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab8cba157598642cb6b42734861a184.png)
(3)在(2)的条件下,求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd06851d747f8ccf046bc807b2523e65.png)
您最近一年使用:0次
2024-02-29更新
|
320次组卷
|
2卷引用:吉林省四校2023-2024学年高二下学期期初联考数学试题
解题方法
8 . 已知球
的半径为2,三棱锥的顶点为
,底面的三个顶点均在球
的球面上,则该三棱锥的体积最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
9 . 如图,在三棱锥
中,底面
为边长为2的等边三角形,
,二面角
的平面角为
,则( )
![](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/ff3c4bda9251c5f2cd7122d952a41ff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796bbaeb8450404c2d146283562006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
A.当![]() ![]() ![]() |
B.当![]() ![]() ![]() |
C.当三棱锥![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() |
您最近一年使用:0次
名校
10 . 如图,在长方体
中,
,
,
是棱
上的一点,点
在棱
上,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
A.若![]() ![]() ![]() ![]() ![]() |
B.存在点![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024-02-28更新
|
1002次组卷
|
6卷引用:广东省百校联考2023-2024学年高三下学期开学考试数学试题