1 . 将长方体截去一个四棱锥,得到的几何体如图所示,则该几何体的俯视图是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/9547b3ee-71b2-46a3-b259-e72fc53bbbd7.png?resizew=115)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/9547b3ee-71b2-46a3-b259-e72fc53bbbd7.png?resizew=115)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2 . 正三棱柱
,如图所示,以四边形
的前面为正前方画出的三视图正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/24/cca60a8f-48e1-42d9-b8db-84273e79cca1.png?resizew=185)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/24/cca60a8f-48e1-42d9-b8db-84273e79cca1.png?resizew=185)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-01-20更新
|
152次组卷
|
2卷引用:青海省海东市第一中学2022-2023学年高二上学期12月期中考试数学试题
3 . 如图,在正方体
中,点M是平面
内的一动点,则三棱锥
的正视图与侧视图的面积之比为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/07d813bc-885a-476d-861b-82eb136f6102.png?resizew=261)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7826e3c6a53025324df827b39c9f7db7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/07d813bc-885a-476d-861b-82eb136f6102.png?resizew=261)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-13更新
|
273次组卷
|
3卷引用:2021届青海省西宁市高三一模数学(文)试题