1 . 在三棱锥ABCD中,对棱
,当平面α与三棱锥ABCD的某组对棱均平行时,则三棱锥ABCD被平面α所截得的截面面积最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62eca91701a957de970930ce426daac4.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,正方体
的棱长为1,
,
分别是棱
,
的中点,过直线
的平面分别与棱
,
交于点
,
,设
,给出下列四个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/922c5d63-0eb3-4ee6-9681-2e41157d8945.png?resizew=165)
①四边形
一定为菱形;
②若四边形
的面积为
,
,则
有最大值;
③若四棱锥
的体积为
,
,则
为单调函数;
④设
与
交于点
,连接
,在线段
上取点
,在线段
上取点
,则
的最小值为
.
其中所有正确结论的序号是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.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/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ecac2dad4cffdd971fd23deacff3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.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/91f2a9b923a355694ea487f6c5669a04.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/922c5d63-0eb3-4ee6-9681-2e41157d8945.png?resizew=165)
①四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e92eac740953aa383be636ea90fd47.png)
②若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e92eac740953aa383be636ea90fd47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f56fa5f9c9f324859bde42ee3ca620db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7b69e93488fcd2a195cb9793e94fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
③若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b941daa059b04aab552429ae22a1661d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201cc22f3d6ba9fa2b9105086939692f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31dcf3dd29fb1df05825fb4db8e53aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
④设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0f0ccc8492a0ccf1eee24867060643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffb952f86442845da723fd291564484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b435d7fc33860ae191f9111d880b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b435d7fc33860ae191f9111d880b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284750727aa2c32b2477d126daefb329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a18799306b1ed4d93066f569a14513d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0998c9ee1ed743a010cd977ff3e5549.png)
其中所有正确结论的序号是
您最近一年使用:0次
2022-02-28更新
|
1147次组卷
|
5卷引用:北京市中国人民大学附属中学2022届高三2月自主复习检测练习(开学测)数学试题
北京市中国人民大学附属中学2022届高三2月自主复习检测练习(开学测)数学试题(已下线)思想03 数形结合思想(练)--第三篇 思想方法篇-《2022年高考数学二轮复习讲练测(新高考·全国卷)》(已下线)第24节 直线、平面平行的判定与性质-备战2023年高考数学一轮复习考点帮(全国通用)河南省洛阳市洛宁县第一高级中学2022-2023学年高二上学期9月月考数学试题(已下线)第二章 立体几何中的计算 专题七 空间范围与最值问题 微点2 线段、距离、周长的范围与最值问题(二)【基础版】
名校
3 . 已知l,m,n是互不相同的直线,α,β,γ是三个不同的平面,给出下列命题:
①若l与m为异面直线,l⊂α,m⊂β,则α
β;
②若α
β,l⊂α,m⊂β,则l
m;
③若α∩β=l,β∩γ=m,γ∩α=n,l
γ,则m
n.
其中所有真命题的序号为________ .
①若l与m为异面直线,l⊂α,m⊂β,则α
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
②若α
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
③若α∩β=l,β∩γ=m,γ∩α=n,l
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
其中所有真命题的序号为
您最近一年使用:0次
4 . 判断正误.
(1)若直线
平面
,且
,则
.( )
(2)若直线l不平行于平面
,则直线l就不平行于平面
内的任意一条直线.( )
(3)若直线a,b和平面
满足
,
,则
.( )
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23976db53f05b3d5d791c4d736a7184d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e076b91a9178217532e11c496400e8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6015ada9e1e432baf0c18ae7e69f5b.png)
(2)若直线l不平行于平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(3)若直线a,b和平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea730233033e2fca0bce6a369a32582f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008d1d0cbb3e1b405df3e67350372d76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc8444d63d1ca92651c62fe9b220859.png)
您最近一年使用:0次
21-22高一·全国·课后作业
5 . 直线与平面平行的性质定理
文字语言 | 一条直线与一个平面 |
符号语言 | ![]() ![]() |
图形语言 | ![]() |
您最近一年使用:0次
名校
6 . 如图,棱长为6的正方体
中,M,N分别是
,
的中点,则平面BMN与正方体表面的交线所围成多边形的周长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://img.xkw.com/dksih/QBM/2021/12/29/2882847505612800/2889839222218752/STEM/44eb9a3b-dbad-4a89-aed4-366c0e6ede0e.png?resizew=181)
您最近一年使用:0次
名校
解题方法
7 . 已知
,
是两条不同的直线,
,
是两个不同的平面,下列说法:
①若
,
,
,则直线
与
可能平行;
②若
,
,
,则直线
与
可能相交、平行或异面;
③若
,
,则直线
与
一定垂直;
④若
,
,
,则直线
与
一定平行.
以上说法正确的是___________ .(填序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a38ada26356d73024fb8533449c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209323a7a4d015f7e570ec578c1731f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53cd751c44ad4d9ebd8e3243e751321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d141538069dac9273b65b9a26ff5821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a38ada26356d73024fb8533449c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209323a7a4d015f7e570ec578c1731f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b303b1f07604f5303aea94df7f0518e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
以上说法正确的是
您最近一年使用:0次
解题方法
8 . 如图所示,直线
平面
,点
平面
,并且直线a和点A位于平面
两侧,点B,C,
,AB,AC,AD分别交平面
于点E,F,G,若
,
,
,则EG=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e52c475644d5a4562e3355efaabb9e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77745febf133c1922bffdb8b2a427b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cff8f6c6de6d5d62710bc48180d95018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60572975f9ac06ffc8d98ef94de49eb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f21d8e7af78693e5da7957c8034e8bcf.png)
您最近一年使用:0次
2021-12-25更新
|
854次组卷
|
3卷引用:人教A版(2019) 必修第二册 实战演练 第八章 课时练习27 直线与平面平行
人教A版(2019) 必修第二册 实战演练 第八章 课时练习27 直线与平面平行4.2 平面与平面平行 同步练习-2021-2022学年高一下学期数学北师大版(2019)必修(第二册)(已下线)专题05 空间直线﹑平面的平行-《知识解读·题型专练》(人教A版2019必修第二册)
名校
解题方法
9 . 如图所示﹐在三棱柱
中,截面
与平面ABC交于直线a,则直线a与直线
的位置关系为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f2185273bf04c11118c7954f7ec822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3636b407d8818e15891e18db47fa0c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
您最近一年使用:0次
2021-12-25更新
|
980次组卷
|
4卷引用:人教A版(2019) 必修第二册 实战演练 第八章 课时练习27 直线与平面平行
人教A版(2019) 必修第二册 实战演练 第八章 课时练习27 直线与平面平行(已下线)8.5 空间直线、平面的平行江西省南昌大学附属中学2021-2022学年高二 4 月线上阶段检测数学(理)试题(已下线)8.5.2 直线与平面平行【第一练】“上好三节课,做好三套题“高中数学素养晋级之路
名校
10 . 空间四边形
中,平行于对角线
,
的平面分别交
,
,
,
于E,F,G,H.且
,
,
.则四边形
面积的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
您最近一年使用:0次
2021-12-17更新
|
259次组卷
|
2卷引用:陕西省西安中学2021-2022学年高三上学期12月第三次月考文科数学试题