1 . 如图正方形
的边长为
,已知
,将
沿
边折起,折起后
点在平面
上的射影为
点,则翻折后的几何体中有如下描述:
①
与
所成角的正切值是
;
②
;
③
的体积是
;
④平面
⊥平面
;
⑤直线
与平面
所成角为
.
其中正确的有__________ .(填写你认为正确的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f2125dfe51596f77b060572f706cbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52bbb16f9380dd62d556480a3944be31.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db5169270ae5637c510cf7675c0758a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba131aeeebeeafceb135b9690512c65.png)
④平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d78fc7fcb2762de28dcef8aa3aa0e49.png)
⑤直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1776d156423ea523de87fbca6c0b6019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
其中正确的有
![](https://img.xkw.com/dksih/QBM/2015/12/4/1572342084820992/1572342090817536/STEM/9f4f3b73-1622-4230-b91e-b2e1e85b9774.png?resizew=282)
您最近一年使用:0次
2016-12-03更新
|
1139次组卷
|
5卷引用:2015届安徽省马鞍山二中等高三上学期统一考试文科数学试卷
2 . 平面
外的一点
,
两两互相垂直,过
的中点
作
面
,且
,
,
,连
,多面体
的体积是
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/6bb4ca44-1ca0-425c-86c9-7ae38e1cb64d.png?resizew=160)
(1)画出面
与面
的交线,说明理由;
(2)求
与面
所成的线面角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1361092e790e4154a14aea9d0db65a9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a38e6c6dfde2b19b6b47f35a439a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f392cf697f88fc22678b5d02cbffb94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e06b70cb64cae00286ae48739ba04455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f3f1fed9719cd978ff46a7634a62e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/6bb4ca44-1ca0-425c-86c9-7ae38e1cb64d.png?resizew=160)
(1)画出面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb31601464364be2baf4aa87404bcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd92fe3fef69971e192dcd23a02374b.png)
您最近一年使用:0次
2020-02-04更新
|
225次组卷
|
3卷引用:2016届上海市奉贤区高三4月调研测试(二模)(文)数学试题