名校
1 . 已知点
与点
,则
的中点坐标是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d39278de57cc1558561fcb05824af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc725366f27ca15025fc532cacf4b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-09-14更新
|
405次组卷
|
6卷引用:浙江省金华市云富高级中学2020-2021学年高二上学期10月月考数学试题
名校
2 . 在空间直角坐标系中,下列结论正确的是( )
A.点![]() ![]() |
B.到![]() ![]() |
C.点![]() ![]() ![]() |
D.点![]() ![]() ![]() |
您最近一年使用:0次
2020-08-07更新
|
406次组卷
|
4卷引用:广东省中山市2019-2020学年高一下学期期末数学试题
3 . 如图,在边长为2的正方体
中,
为平面
内的一动点,
于
,若
,则点
的轨迹为
![](https://img.xkw.com/dksih/QBM/2018/4/8/1919576714043392/1920366411169792/STEM/475935ee88304ce1aaa4758e46dbc19d.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a99be053c95aefbebe7460e50df572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef7eab528a8dd3e3f328de3b3ac80ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070e201aa02632981f61018c672a4d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2018/4/8/1919576714043392/1920366411169792/STEM/475935ee88304ce1aaa4758e46dbc19d.png?resizew=160)
A.椭圆 | B.双曲线 | C.抛物线 | D.圆 |
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2018-04-09更新
|
895次组卷
|
3卷引用:重庆綦江区2017—2018学年度第一学期期末高中联考高二文科数学试题
4 . 在空间直角坐标系中,设
,
,
,
的中点为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb2d34488e12d9a7177ff5d0c76fe07.png)
_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88eccdc3ded57bcd308a2a91ddf50b38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18672be14d911cbf53b7f9a7c9864e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc82a8174766c42dac2fa3de5f309200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb2d34488e12d9a7177ff5d0c76fe07.png)
您最近一年使用:0次