名校
解题方法
1 . 如图,在四边形
中,
,
,
,
,将
沿
进行翻折,在这一翻折过程中,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8745717601cd14b46c2298919b41b502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926bf61be3e223c11ad3f007901abf8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6037bba27008abc96a6dba99753549ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
A.始终有![]() |
B.当平面![]() ![]() ![]() ![]() |
C.当平面![]() ![]() ![]() ![]() ![]() |
D.当二面角![]() ![]() ![]() ![]() |
您最近一年使用:0次
2 . 如图,在正方体
中,点P,Q分别是棱
上异于 端点的两个动点,且
,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844851461701632/2846807741530112/STEM/9796d8c6492243328bf3b570b2b2e844.png?resizew=296)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31be3b7305d6c181420ea7b28c420851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fcb7f5ef0f13d468ff6c4660e5921e0.png)
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844851461701632/2846807741530112/STEM/9796d8c6492243328bf3b570b2b2e844.png?resizew=296)
A.三棱锥![]() |
B.对于任意位置的点P,平面![]() ![]() |
C.![]() ![]() |
D.对于任意位置的点P,均有平面![]() ![]() |
您最近一年使用:0次
2021-11-08更新
|
457次组卷
|
5卷引用:重庆市西南大学附属学校2021届高三下学期高考适应性月考(八)数学试题
3 . 如图,在四棱锥
中,底面
为正方形,
底面
,
,
为
的中点,
为线段
上的动点(不包含端点),以下说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/d29fe03e-567b-4bdf-9755-301d5c0a5afc.png?resizew=164)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/d29fe03e-567b-4bdf-9755-301d5c0a5afc.png?resizew=164)
A.存在![]() ![]() ![]() |
B.![]() ![]() ![]() ![]() ![]() |
C.对任意![]() ![]() ![]() |
D.对任意![]() ![]() ![]() |
您最近一年使用:0次
2021-06-04更新
|
915次组卷
|
2卷引用:重庆市西南大学附属中学2020-2021学年高一下学期期末数学试题