1 . 在正方体
中,下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.若![]() ![]() ![]() |
B.直线![]() ![]() ![]() |
C.![]() ![]() |
D.四面体![]() ![]() |
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名校
2 . 已知在正方体
中,
分别是棱
的中点,
是棱
上一点,则下列命题中正确的个数为( )
①异面直线
与
之间的距离为定值;
②平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
平面
;
③设平面
平面
,则
;
④直线
与平面
所成的角为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18d8f78500301347c238d8079cb7208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
①异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd5b5d9bed01632b26ab881deab2afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
②平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a253cf6e78c3d60d1d29a24e2f0a41d.png)
③设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6704f9196e4a299664383c683a064c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72063e390276ce5fb902c2a9c4aa8f71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e04ba55ac2061f4e3da6a9b141593bed.png)
④直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679748eab882a6be0fefd2cc300349a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
A.4 | B.3 | C.2 | D.1 |
您最近一年使用:0次
2022-12-08更新
|
567次组卷
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3卷引用:河南省安阳市第一中学2023届高三上学期阶段性测试(三)理科数学试题
名校
解题方法
3 . 如图,在圆锥
中,
为圆锥的底面直径,
为等腰直角三角形,B为底面圆周上一点,且
,M为
上一动点,设直线
与平面
所成的角为
,则
的最大值为( )
![](https://img.xkw.com/dksih/QBM/2022/5/31/2991331251658752/2995624865628160/STEM/7b637f03-546d-41cd-bb5c-d12a205df881.png?resizew=221)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b81d02669184446ad2aba25e8b9692e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26fdd8e57562ba94e10e7f1d770826d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6f6dfdbe7d39891c35f67e1a95c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
![](https://img.xkw.com/dksih/QBM/2022/5/31/2991331251658752/2995624865628160/STEM/7b637f03-546d-41cd-bb5c-d12a205df881.png?resizew=221)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-06-06更新
|
593次组卷
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5卷引用:河南省安阳市2022届高三下学期高考模拟试题理科数学试题
河南省安阳市2022届高三下学期高考模拟试题理科数学试题河南省安阳市2022届高三下学期高考模拟试题文科数学试题河南省商丘市第一高级中学2021-2022学年高一下学期7月月考数学试题(已下线)7.3 空间角(精讲)(已下线)8.6.2直线与平面垂直的判定定理(第1课时)(精讲)(2)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)