名校
1 . 正方体
中,
是棱
的中点,
在侧面
上运动,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc725182c2fd1413319fea35b95c7dc.png)
平面
.以下命题正确的有__________ .
上存在点
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85987eba3f73b563261c230ca78ac17.png)
②直线
与直线
所成角可能为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
③平面
与平面
所成锐二面角的正切值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
④设正方体棱长为1,则过点
的平面截正方体所得的截面面积最大为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc725182c2fd1413319fea35b95c7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85987eba3f73b563261c230ca78ac17.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc725182c2fd1413319fea35b95c7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
④设正方体棱长为1,则过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ce1db63efd7a08056ed520bc14cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f8f7e40ba386c0a9675896b52752d6.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,正三棱柱
的底面边长是2,侧棱长是
,M为
的中点,N是侧面
上一点,且
∥平面
,则线段MN的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea848cd2aa3a464618020475097949fc.png)
您最近一年使用:0次
2023-04-13更新
|
1206次组卷
|
3卷引用:陕西省榆林市2023届高三三模文科数学试题
陕西省榆林市2023届高三三模文科数学试题海南省海口市海南中学2022-2023学年高一下学期期中考试数学试题(已下线)专题19 平面与平面平行-《重难点题型·高分突破》(人教A版2019必修第二册)
名校
解题方法
3 . 在棱长为1的正方体
中,
是侧面
内一点(含边界)则下列命题中正确的是(把所有正确命题的序号填写在横线上)______ .
①使
的点
有且只有2个;
②满足
的点
的轨迹是一条线段;
③满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
平面
的点
有无穷多个;
④不存在点
使四面体
是鳖臑(四个面都是直角三角形的四面体).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67e05241efa370017b863e6e0fe72bbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
①使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e7facb932529ae0d511d77714cf9e73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
②满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac117747fb221b7f976577c5fb824084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
③满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
④不存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90671eb673c449b2b257ca23848f2f4c.png)
您最近一年使用:0次
2022-12-26更新
|
460次组卷
|
3卷引用:陕西省宝鸡市2023届高三上学期一模理科数学试题
名校
解题方法
4 . 如图,在长方体
中,
,
,
,
分别是
,
的中点,则下列四个结论中成立的是________ .(写出对应的序号)
①
平面
;
②
;
③
;
④长方体
的外接球表面积为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d150134e5018f74fc4e8a016ced5f11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b027ebfa72e944eeebd9c1298b9a17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecad355286188fd317939fa50f9555.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9480c44a25280485a814210df4e5801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc01e615163441c39b330ad4680b5c1a.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb1ad2345fb1feffd7b8d34a78805bc2.png)
④长方体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9dccf5e8a34c10d6266dc6691240920.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/4eec410d-e03d-44fd-9fe6-d66832f5a3ec.png?resizew=144)
您最近一年使用:0次
2021-05-30更新
|
608次组卷
|
7卷引用:陕西省2021届高三下学期教学质量检测测评(五)文科数学试题
陕西省2021届高三下学期教学质量检测测评(五)文科数学试题(已下线)“超级全能生”2021届高三全国卷地区5月联考试题(乙卷)数学(文)试题(已下线)“超级全能生”2021届高三全国卷地区5月联考试题(甲卷)数学(文)试题(已下线)考点29 空间几何体的结构及其三视图与直观图-备战2022年高考数学(文)一轮复习考点帮(已下线)考向33 空间中的平行关系新疆克拉玛依市第一中学2020-2021学年高二下学期期末数学试题安徽省合肥市长丰县衡安学校2020-2021学年高二下学期第四次调研考试文科数学试题
名校
解题方法
5 . 已知正方体
的棱长为
,
为棱
的中点,点
在正方形
内运动,且直线
平面
,则动点
的轨迹长度为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac480d8d9d7821b62a603cf5cfda236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次