名校
解题方法
1 . 如图,下列正方体中,
为底面的中点,
为所在棱的中点,
、
为正方体的顶点,则满足
的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9279bcb7ade37b74c2f05cd30f40f99f.png)
A.③④ | B.①② | C.②④ | D.②③ |
您最近一年使用:0次
2024-05-08更新
|
192次组卷
|
2卷引用:云南省昆明市官渡区2022-2023学年高二上学期期中联考数学试卷
2 . 如图,在棱长为
的正方体
中,
是
的中点,点
是侧面
上的动点,且
截面
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3123da0313d458c833e82aaa234b9117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211ad5a06b505b8365a62c1946f3cb7.png)
A.直线![]() ![]() |
B.点![]() ![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
3 . 如图,在长方体
中,
,
,
为
的中点.
;
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7d64fc81c857b124268609a8beb77b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0fa81c1f81266b4ef3d471bc6bfc38d.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2331bccb6ebf5b9fd639df994f575a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
您最近一年使用:0次
4 . 已知向量
,
,则
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7bd271d93a044ade2270267707392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2774bb3f735a9f20e709a86441476dad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c6bd21d9c27a68b970f446f04d6df.png)
您最近一年使用:0次
解题方法
5 . 椭圆
的左右焦点为
,
,P为椭圆上第一象限内任意一点,
关于P的对称点为M,
关于
的对称点为N,则
的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb4717d7fa6d522090c5e949f650bd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f569c8080c8e2bfcfa7fcc38d2809d0.png)
A.10 | B.14 | C.18 | D.20 |
您最近一年使用:0次
名校
6 . 以下命题正确的是( )
A.平面![]() ![]() ![]() ![]() ![]() ![]() ![]() |
B.直线![]() ![]() ![]() ![]() ![]() ![]() |
C.直线![]() ![]() ![]() ![]() ![]() ![]() ![]() |
D.平面![]() ![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024-04-14更新
|
305次组卷
|
2卷引用:云南省昆明市官渡区2022-2023学年高二上学期期中联考数学试卷
7 . 有下列四个命题,其中为真命题的是( )
①
; ②
;
③
; ④
.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc4ca68d995a2027c47f72e248f4675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47637fb73e82425ee9d7f41511580f2d.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0dd74c70ae866e7c2aa965f98a02345.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88571488ebcce6beee8f97328bf68b6d.png)
A.① | B.② | C.③ | D.④ |
您最近一年使用:0次
解题方法
8 . 下列说法错误的是( )
A.已知命题![]() ![]() ![]() |
B.“![]() ![]() |
C.![]() ![]() ![]() |
D.已知![]() ![]() ![]() |
您最近一年使用:0次
9 . 如图,四棱柱:
的各个面都是平行四边形,设
,
,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/b0e05d88-7dd2-4867-bfc6-efe031dcd379.png?resizew=226)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3adc4ed291596abf3bb93ae7a075d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e984585ddf28c039219afcebf229de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8780f5b68f8907a57c1c2f96233a78c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d62fd7855b8b18dabf9e319057958b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/b0e05d88-7dd2-4867-bfc6-efe031dcd379.png?resizew=226)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
10 . 已知向量
,则与
共线的单位向量为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf2a72888f3daaeab0cdecef4f3b73e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
A. ![]() | B.![]() | C. ![]() | D.![]() |
您最近一年使用:0次
2023-11-06更新
|
498次组卷
|
6卷引用:云南省腾冲市2022-2023学年高二上学期期中教育教学质量监测数学试题
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