名校
1 . 如图,四棱锥
中,底面
是边长为
的正方形,
平面
,
为底面
内的一动点,若
,则动点
的轨迹在( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/dc8c97b1-4357-4a95-a73d-e2b64b4f9b89.png?resizew=152)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/629564b4011866ed8753e064dff78252.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/dc8c97b1-4357-4a95-a73d-e2b64b4f9b89.png?resizew=152)
A.圆上 | B.双曲线上 | C.抛物线上 | D.椭圆上 |
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2020-02-01更新
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278次组卷
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3卷引用:重庆市清华中学校2020-2021学年高二上学期1月月考数学试题