1 . 如图,在棱长为1的正方体
中,
,
分别为棱
,
的中点,
为线段
上一个动点,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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/11/f788475a-4a39-4578-878c-65084fbf45bd.png?resizew=166)
A.![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.直线![]() ![]() ![]() |
D.若点![]() ![]() ![]() ![]() ![]() ![]() |
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2 . 在《九章算术》中,将四个面都为直角三角形的三棱锥称之为鳖臑.如图,在鳖臑
中,
底面
,作
于
于
,下面结论正确的是( )
平面
②
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
③三棱锥
是鳖臑 ④三棱锥
是鳖臑
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2169310b6d8401233bba8c8ddc3251c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfbaf73297240eb116f22489519895a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8da7ba1b78ff2e5a6279ec10610bbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a22d6b860f06fe23618b0d3de6768fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
③三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf81f142b84adcf278b51c62c88e6afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68744081315689b14c9c7a2b74100f46.png)
A.①③ | B.①②④ | C.②③ | D.①③④ |
您最近一年使用:0次
2023-07-08更新
|
446次组卷
|
7卷引用:湖北省部分市州2022-2023学年高一下学期7月期末联考数学试题
湖北省部分市州2022-2023学年高一下学期7月期末联考数学试题内蒙古大学满洲里学院附属中学2022-2023学年高一下学期期末考试数学试题(已下线)模块二 专题4 立体几何中的平行与垂直的位置关系 能力卷B(已下线)模块二 专题7 立体几何中的平行与垂直的位置关系 能力卷B(已下线)专题8.10 立体几何初步全章十三大基础题型归纳(基础篇)-举一反三系列【人教A版(2019)】专题16立体几何与空间向量(第五部分)-高一下学期名校期末好题汇编(已下线)核心考点5 立体几何中的位置关系 A基础卷 (高一期末考试必考的10大核心考点)
名校
3 . 在直角
中,
,
上有一动点
(异于
,
),将
沿
折起,使得三棱锥
的顶点
在底面
上的投影
恰好落在线段
上,则
长度的范围______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf9718967af7a01c5b4866ea6f73bbb.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
您最近一年使用:0次
4 . 如图,在三棱锥
中,
为等边三角形,且
.
(1)求证:
;
(2)若面
面
,且
,求
与面
的夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e4b16c2c6c9bd089da78122e9d2511.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/3/7be2e0ce-ca41-4e36-af7c-3057be1727dc.png?resizew=155)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
(2)若面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852a35935d668f92ed82f6baaff5ab60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
解题方法
5 . 如图,矩形ABCD是圆柱
的一个轴截面,点E在圆O上(异于A,B),F为DE的中点.
平面
;
(2)若直线DE与平面
所成的角为
时,证明:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f332555e65843f32f4c623098c6adc72.png)
(2)若直线DE与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf84ed033bd035c2fe7552badd5e447d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
您最近一年使用:0次
2023-07-01更新
|
391次组卷
|
2卷引用:湖北省武汉市部分学校联合体2022-2023学年高一下学期期末联考数学试题
名校
6 . 在三棱锥
中,
,
,
两两垂直,
,
,
为棱
上一点,
于点
,则当
的面积取最大值时,三棱锥
的外接球表面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a94d59dee2d5a8f0425b64b2083825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c14427faad52b64c142facdaccb3b7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e02fe83ec7038d9729ca0b9df5493e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e19dd332eccf6ca418898e64b3a1f583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0756277c18bea4e9c3b74fb28fd58c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b2e3cac5106bc8a7ad98618c251cb5d.png)
您最近一年使用:0次
2023-06-30更新
|
536次组卷
|
2卷引用:湖北省武汉市华中师范大学第一附属中学2022-2023学年高一下学期6月期末数学试题
名校
7 . 如图,在四棱锥P-ABCD中,△PBC为正三角形,底面ABCD为直角梯形,AD∥BC,
,点M,N分别在线段AD和PC上,且
.
(1)求证:PM∥平面BDN;
(2)设锐二面角
大小为θ,且
,求直线BD和平面PAD所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc72a78ef2839cf81f7a3aaa5a06883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c4e32e152097c2dfad9769da74680b6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/5/6f057deb-5aa5-4fb4-ad29-85c2c109d6ec.png?resizew=190)
(1)求证:PM∥平面BDN;
(2)设锐二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796bbaeb8450404c2d146283562006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab07c820ae206be9743cd7186d518b2.png)
您最近一年使用:0次
名校
解题方法
8 . 如图所示,该几何体由一个直三棱柱
和一个四棱锥
组成,
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a7ad15b77c2cc409bc24adff155819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78f535e16e0474f1660d7d0816ee2318.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/16/b60590fa-533c-4e7e-9389-4347388cc73f.jpg?resizew=113)
A.若![]() ![]() |
B.若平面![]() ![]() ![]() |
C.三棱柱![]() ![]() |
D.当该几何体有外接球时,点![]() ![]() ![]() |
您最近一年使用:0次
2023-06-22更新
|
1275次组卷
|
8卷引用:湖北省武昌实验中学2023-2024学年高三上学期10月月考数学试题
名校
9 . 过正方体
顶点A作平面
,使
//平面
,
和
的中点分别为E和F,则直线EF与平面
所成角为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/4fb04914c4e8fb3483da44c67fe1809f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbafedc202bd0d86c4dfdece9f8f4fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
名校
10 . 如图,在三棱锥
中,
,点
在平面
内,点Q在AB上,且满足
.
(1)过Q作AB的垂面
,分别交BC于E,交BD于F,过B作
交CD于点M,证明:
;
(2)当PQ与平面
所成最大角的正切值是
时,求此时PQ与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c284ccb6f4ee7a8690013d2ce16e226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84733f9dc908ceb11459cc2aed580ab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/17/b4d9a047-f988-41b2-bb4a-3a89ede50169.png?resizew=154)
(1)过Q作AB的垂面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1657f0781f2d325a939ebc926e4f4f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262ba9641d1dada44105a5cf7230b8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c9c9ccb1f2accde19b3ca9920a845c.png)
(2)当PQ与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519bd215d019509fa2d88e57f145a896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2023-06-13更新
|
250次组卷
|
2卷引用:湖北省武汉市第六中学2022-2023学年高一下学期第六次月考数学试题