一个正方体的平面展开图如图所示,在这个正方体中,点
是棱
的中点,
,
分别是线段
,
(不包含端点)上的动点,则下列说法正确的是
![](https://img.xkw.com/dksih/QBM/2020/7/3/2498195069509632/2498772582981632/STEM/8e3353da855145edb232c9cff7d8947b.png?resizew=184)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://img.xkw.com/dksih/QBM/2020/7/3/2498195069509632/2498772582981632/STEM/8e3353da855145edb232c9cff7d8947b.png?resizew=184)
A.在点![]() ![]() |
B.在点![]() ![]() |
C.三棱锥![]() |
D.三棱锥![]() |
2020·山东·一模 查看更多[2]
更新时间:2020-07-04 19:08:44
|
相似题推荐
【推荐1】如图,在棱长为2的正方体
中,M,N,P分别是
,
,
的中点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/2b78aeba-1893-4319-bb30-22a26761c6e6.png?resizew=195)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e97fcdcfd6183b976a61ef3222c607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/2b78aeba-1893-4319-bb30-22a26761c6e6.png?resizew=195)
A.M,N,B,![]() |
B.异面直线![]() ![]() |
C.平面BMN截正方体所得截面为等腰梯形 |
D.三棱锥![]() ![]() |
您最近一年使用:0次
【推荐2】如图,在正方体
中,点
是线段
上的动点,则下列判断正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/12/16/2873999653838848/2877790144143360/STEM/3b50314d-aeee-47a0-a570-8b8f61423266.png?resizew=195)
![](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/e539f26ed5e0b20ff7220559324869a4.png)
![](https://img.xkw.com/dksih/QBM/2021/12/16/2873999653838848/2877790144143360/STEM/3b50314d-aeee-47a0-a570-8b8f61423266.png?resizew=195)
A.当点![]() ![]() ![]() ![]() |
B.无论点![]() ![]() ![]() |
C.无论点![]() ![]() ![]() |
D.若异面直线![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
多选题
|
适中
(0.65)
名校
解题方法
【推荐1】如图,已知正方体
中,
分别为棱
、
的中点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e12ef075231f9d4246417c0a9d527e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d396bc8cdde9d1ed203a3efafb4d7ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e3e67d56b946fd77a7f9d12222e0a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79fa259fccb129851a917df61664a7f7.png)
A.![]() | B.![]() ![]() |
C.![]() | D.RS与![]() ![]() |
您最近一年使用:0次
多选题
|
适中
(0.65)
【推荐2】如图,四棱锥
,平面
平面ABCD,侧面PAD是边长为
的正三角形,底面ABCD为矩形,
,点Q是PD的中点,则下列结论正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/da483ac8-257f-4cf2-a084-2607d80e71b4.png?resizew=235)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10e8abf8690e4b129466ddb918bcc94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4836945f324c29ef818b423bcc017a93.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/da483ac8-257f-4cf2-a084-2607d80e71b4.png?resizew=235)
A.![]() | B.直线QC与PB是异面直线 |
C.三棱锥![]() ![]() | D.四棱锥![]() ![]() |
您最近一年使用:0次
多选题
|
适中
(0.65)
【推荐3】如图,在正方体
中,E是棱CD上的动点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/7/77ee7993-5ca2-49c6-9980-b1073c714968.png?resizew=179)
A.![]() ![]() |
B.![]() |
C.三棱锥![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
多选题
|
适中
(0.65)
名校
【推荐1】已知α,β是两个不重合的平面,m,n是两条不重合的直线,则下列命题正确的是( )
A.若m∥n,m⊥α,则n⊥α | B.若m∥α,α∩β=n,则m∥n |
C.若m⊥α,m⊥β,则α∥β | D.若m⊥α,m∥n,n∥β,则α∥β |
您最近一年使用:0次
多选题
|
适中
(0.65)
【推荐2】已知a,b表示两条不同的直线,α,β表示两个不同的平面,那么下列判断正确的是( )
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次