名校
解题方法
1 . 在正方体
中,
,点
满足
,其中
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f9dd1458186cfbdf0701ba835572721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf326510f76018d51105bb42c195ca3.png)
A.当![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
2 . 在直四棱柱
中,所有棱长均为2,
,
为
的中点,点
在四边形
内(包括边界)运动,下列结论中正确的是_____ (填序号)
在线段
上运动时,四面体
的体积为定值
②若
面
,则
的最小值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
③若
的外心为M,则
为定值2
④若
,则点
的轨迹长度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a46dc0bb5d8fa33583817e530a5d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b54387f870ae37f7951b253665d64f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd91ef047f2591dc1406bc0e39934fe6.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea3bcade880af77158e0dc1a6af2980.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be61fee6829cb6e6fe17808c1a8fe197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4996e2ab0b3cdb7d3406e038e5a46c5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497ad8ec00e4751a797d755753c8e760.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e077661d6c2faacf4a12f6cfba099f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
您最近一年使用:0次
2024-06-11更新
|
393次组卷
|
2卷引用:江苏省扬州市第一中学2023-2024学年高一下学期5月教学质量调研评估数学试题
名校
3 . 棱长为2的正方体
中,点
,
,
分别是棱
,
,
的中点,则下列说法正确的有( )
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
A.![]() ![]() |
B.![]() ![]() ![]() |
C.平面![]() ![]() |
D.点![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024高三·全国·专题练习
4 . 如图,已知四边形
是矩形,
平面
,且
,M、N是线段
、
上的点,满足
.
,求证:直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
平面
;
(2)是否存在实数
,使直线
同时垂直于直线
,直线
?如果有请求出
的值,否则请说明理由;
(3)若
,求直线
与直线
所成最大角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8cbd23176d1f96deb84372973e16a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564376a88fa74090de9f7694226a6184.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
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2024-03-17更新
|
948次组卷
|
5卷引用:江苏省镇江市实验高级中学2023-2024学年高一下学期5月月考数学试卷
江苏省镇江市实验高级中学2023-2024学年高一下学期5月月考数学试卷(已下线)期中考试押题卷(考试范围:第6-7章)-【帮课堂】2023-2024学年高二数学同步学与练(苏教版2019选择性必修第二册)(已下线)【江苏专用】高二下学期期末模拟测试B卷(已下线)专题01 空间向量与立体几何解答题必考题型(6类题型)-备战2023-2024学年高二数学下学期期末真题分类汇编(江苏专用)(已下线)第二章 立体几何中的计算 专题一 空间角 微点3 异面直线所成角综合训练【培优版】
名校
5 . 如图,棱长为2的正方体
中,
为棱
的中点,
为正方形
内一个动点(包括边界),且
平面
,则下列说法正确的有( )
![](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/71a73120cd0988eb4a63436e7a4b9470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1df970d8b2fcbb38bfac1dc33da9179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
A.动点![]() ![]() |
B.三棱锥![]() ![]() |
C.![]() ![]() |
D.当三棱锥![]() ![]() |
您最近一年使用:0次
2024-03-13更新
|
3603次组卷
|
9卷引用:江苏省无锡市锡东高级中学2024届高三下学期4月月考数学试题
江苏省无锡市锡东高级中学2024届高三下学期4月月考数学试题山东省潍坊市昌乐北大公学学校2024届高三下学期3月监测数学试题江苏省南京航空航天大学苏州附属中学2023-2024学年高三下学期二模阳光测试数学试题湖北省七市州2024届高三下学期3月联合统一调研测试数学试题(已下线)高一下学期期中数学试卷(提高篇)-举一反三系列(已下线)压轴小题7 探究立体几何中的动态问题(已下线)湖北省七市州2024届高三下学期3月联合统一调研测试数学试题变式题6-10河北省张家口市尚义县第一中学等校2024届高三下学期模拟演练数学试题广东省湛江市第二十一中学2024届高三高考冲刺数学试题
6 . 如图,正方体
的棱长为
分别是棱
的中点,过直线
的平面分别与棱
交于
.设
,以下正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd110e5d9ab042968ec706b44e78572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e86e3991200297ad172455e5ea93f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31be3b7305d6c181420ea7b28c420851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ced0d1d92d5a2b2432695cb37689249.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/1627c529-2125-475e-8cae-d48061dd6cb2.png?resizew=165)
A.平面![]() ![]() |
B.当且仅当![]() ![]() |
C.四边形![]() ![]() |
D.四棱锥![]() ![]() |
您最近一年使用:0次
名校
7 . 已知正三棱柱
的棱长均为2,点D是棱
上(不含端点)的一个动点.则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
A.![]() |
B.棱![]() ![]() ![]() |
C.三棱锥![]() ![]() |
D.当点D是棱![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
8 . 如图,在三棱锥
中,侧面
底面
,
,
是边长为2的正三角形,
,
分别是
的中点,记平面
与平面
的交线为
.
平面
;
(2)设点
在直线
上,直线
与平面
所成的角为
,异面直线
与
所成的角为
,求当
为何值时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829a1a887ceba13dd8551b1e3604bf6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df740160690029ac1e730c85f20347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4820decdfaf6808eda1b625cc8aa0110.png)
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2024-06-10更新
|
507次组卷
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7卷引用:江苏省南通一中2023-2024学年高二年级数学下学期第二次月考(含答案)
江苏省南通一中2023-2024学年高二年级数学下学期第二次月考(含答案)湖南师范大学附属中学2022届高三下学期月考(七)数学试题山西大学附属中学校2023届高三下学期3月模块诊断数学试题云南省红河州建水实验中学2022-2023学年高一下学期4月考试数学试题重庆市第八中学2022届高三下学期调研检测(七)数学试题(已下线)专题03 空间向量求角度与距离10种题型归类-【巅峰课堂】2023-2024学年高二数学上学期期中期末复习讲练测(人教A版2019选择性必修第一册)湖北省宜荆荆2024届高三下学期五月高考适应性考试数学试题
名校
解题方法
9 . 在四棱锥
中,底面
是边长为
的正方形,
在底面的射影为正方形的中心
,
,
点为
中点.点
为该四棱锥表面上一个动点,满足
、
都平行于过
的四棱锥的截面,则动点
的轨迹围成的多边形的面积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0819cd060cdfb72896f379db29a4724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e4b0ddfa5aec71d6df83e574b56150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
您最近一年使用:0次
2023-12-16更新
|
471次组卷
|
3卷引用:江苏省镇江市丹阳高级中学2024届高三下学期2月阶段检测数学试题
解题方法
10 . 在正方体
中,
分别为
中点,P是
上的动点,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/525235119b7977ffae46707a313bba20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00bd0bd954971c2d9c9245763119a71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
A.![]() |
B.三棱锥![]() |
C.点![]() ![]() ![]() |
D.平面![]() ![]() ![]() |
您最近一年使用:0次