1 . 给出以下四个结论:
①平行于同一直线的两条直线互相平行;
②垂直于同一平面的两个平面互相平行;
③若
,
是两个平面;
,
是异面直线;且
,
,
,
,则
;
④若三棱锥
中,
,
,则点
在平面
内的射影是
的垂心;
其中错误结论的序号为__________ .(要求填上所有错误结论的序号)
①平行于同一直线的两条直线互相平行;
②垂直于同一平面的两个平面互相平行;
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](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/539a38ada26356d73024fb8533449c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209323a7a4d015f7e570ec578c1731f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713288c700aee0f6f797e06760466185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73552465f894573a9147f9a81779b5be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de666db0febae223cc4d1dc189d71ca6.png)
④若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e3c1c236141d6118429fade0a9b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
其中错误结论的序号为
您最近一年使用:0次
2 . 如图,正方体
的棱长为1,
分别为
的中点,过直线
的平面分别与棱
交于点
.设
,给出以下四个结论:
![](https://img.xkw.com/dksih/QBM/2020/7/10/2503000483315712/2503858342428673/STEM/cd1609fd1e5343b39da958d419aa65d7.png?resizew=198)
①平面
平面
;
②当且仅当
时,四边形
的面积最小;
③四边形
的周长
是单调函数;
④四棱锥
的体积是定值.
其中正确结论的序号为______ (请写出所有正确结论的序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.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/d87dccaf9f65ef67b126e9cf94bd8694.png)
![](https://img.xkw.com/dksih/QBM/2020/7/10/2503000483315712/2503858342428673/STEM/cd1609fd1e5343b39da958d419aa65d7.png?resizew=198)
①平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1f56858867e7b6becaeac49112a3d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2bf9ef324f1289e205e29fed105c38e.png)
②当且仅当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e92eac740953aa383be636ea90fd47.png)
③四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e92eac740953aa383be636ea90fd47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a1d36150a026bbd7a16b8bc936e214.png)
④四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb21d0d3f430f009b677eb8945323e1.png)
其中正确结论的序号为
您最近一年使用:0次
名校
3 . 设
是两条不同的直线,
是三个不同的平面,下列说法中正确的序号为( )
①若
,则
为异面直线 ②若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202af51f5ebe87ec0017f439a6ad7fbf.png)
③若
,则
④若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc52997e8e7d139cb30eea9bdd71b406.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a5990df94c1e61df16039f30052ee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d66676a4ba8946c6f8c8ff9e2287aac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202af51f5ebe87ec0017f439a6ad7fbf.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0365f4796822f9772287cbd94f271c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35a45cfcdfbda18b089ce6698ccdbcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e09eeb563830b4802ae817b4da6b69c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
A.①② | B.②③ | C.③④ | D.②④ |
您最近一年使用:0次
7日内更新
|
967次组卷
|
8卷引用:山东省菏泽市第一中学八一路校区2023-2024学年高一下学期第三次月考数学试题
4 . 如图所示的菱形
中,
对角线
交于点
,将
沿
折到
位置,使平面
平面
.以下命题:
①
;
②平面
平面
;
③平面
平面
;
④三棱锥
体积为
.
其中正确命题序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4b6f03fa7c782408bb6fabb57c1576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ea25ef38e4afa8f75ffd0842890289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe052786101dfcc941480919eb2cecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/22/70dc5fdb-9d52-4f09-87d1-32477e72c148.png?resizew=342)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c83a968964b21bd831d75905ca1e487.png)
②平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0cf578c7ba542ff9946ad172f896dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d138354c4e021ac8ae2a2fb176ca14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1530d93834fbafba5f7217778ea90442.png)
④三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb4c6e9a723aa843e6ba62d7c1a3a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
其中正确命题序号为( )
A.①②③ | B.②③ | C.③④ | D.①②④ |
您最近一年使用:0次
2023-05-19更新
|
1237次组卷
|
6卷引用:山西省太原师范学院附属中学、太原市师苑中学校2022-2023学年高一下学期5月月考数学试题
山西省太原师范学院附属中学、太原市师苑中学校2022-2023学年高一下学期5月月考数学试题陕西省咸阳市2023届高考模拟理科数学试题陕西省咸阳市2023届高考模拟文科数学试题江西省南昌市铁路第一中学2023-2024学年高二上学期10月月考数学试题(已下线)第04讲 直线、平面垂直的判定与性质(五大题型)(讲义)(已下线)第一章 点线面位置关系 专题二 空间垂直关系的判定与证明 微点5 平面与平面垂直的判定与证明【基础版】
解题方法
5 . 已知正方体
,过对角线
作平面
交棱
于点
,交棱
于点
,则:
①平面
分正方体所得两部分的体积相等;
②四边形
一定是平行四边形;
③平面
与平面
不可能垂直;
④四边形
的面积有最大值.
其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.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/a0ed1ec316bc54c37c4286c208f55667.png)
①平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
②四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef5ea43614d815c3abb27a42dfb101b.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1477ae90a240deba97f8dadf4d7c41aa.png)
④四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef5ea43614d815c3abb27a42dfb101b.png)
其中所有正确结论的序号为( )
A.① | B.② | C.③ | D.④ |
您最近一年使用:0次
解题方法
6 . 如图所示,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
,恰出以下四个命题:
①平面
一定为矩形; ②平面
平面
;
③当
为
的中点时,
的面积最小; ④四棱锥
的体积为常数.
以上命题中正确命题的序号为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a99be053c95aefbebe7460e50df572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ad4ab6413ee1fb338ad0c632df6f60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed75232f4fb7eae7ee84d8049a2e1565.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
①平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e92eac740953aa383be636ea90fd47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1f56858867e7b6becaeac49112a3d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cb36fc78d7677525df1e9952ad33098.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f022b18f3b30bccee515df5e47ff00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e92eac740953aa383be636ea90fd47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b941daa059b04aab552429ae22a1661d.png)
以上命题中正确命题的序号为
![](https://img.xkw.com/dksih/QBM/2017/9/1/1764924044869632/1766324751925248/STEM/fd072087f6394279acb2160612f289c2.png?resizew=108)
您最近一年使用:0次
7 . 在正方体
中,给出以下四个结论:
(1)直线
平面
;(2)直线
与平面
相交;
(3)直线
平面
; (4)平面
平面
.
上述结论中,所有正确结论的序号为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
(1)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd8f61df5729a4a941d7403a047dae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96872cd6cd581ae8a861c7032e0257b4.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/263d398159c7433838b714a9a75d61e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d32b0fac933ccb4eaa623a9ea1b2b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
上述结论中,所有正确结论的序号为
![](https://img.xkw.com/dksih/QBM/2019/4/23/2188698964582400/2189492396007424/STEM/6e1d30c125ee40b996e47dca621b1f71.png?resizew=112)
您最近一年使用:0次
2016-12-03更新
|
1796次组卷
|
5卷引用:【市级联考】江苏省高邮市2018-2019学年高一第二学期期中调研数学试题
8 . 如图,在正方体
中,点
在线段
上移动,有下列判断:①平面
平面
;②平面
平面
;③三棱锥
的体积不变;④
平面
.其中,正确的是______ .(把所有正确的判断的序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0f8ab808f594f9d202692b3d3b10ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4508dc6d9c91157836be679c0543cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0967be82a243f285728d50e7b81332f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4508dc6d9c91157836be679c0543cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad253c20630cb956229ee3431fc8be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca3ec3133707610164d237ac979a268d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4508dc6d9c91157836be679c0543cac.png)
![](https://img.xkw.com/dksih/QBM/2020/1/5/2370738235064320/2371404224421888/STEM/60ed8df41e8c44b48e6e147ec840cff0.png?resizew=117)
您最近一年使用:0次
2020-01-06更新
|
1402次组卷
|
10卷引用:【新东方】杭州新东方高中数学试卷334
(已下线)【新东方】杭州新东方高中数学试卷334吉林省通化市部分重点中学校2021-2022学年高一下学期期末数学试题四川省资阳市2019-2020学年高三上学期第二次诊断考试数学(文)试题四川省广安遂宁资阳等七市2019-2020学年高三上学期第一次诊断性考试数学(文)试题2020届四川省眉山市高三第一次诊断性考试数学(文)试题2020届高三1月(考点07)(文科)-《新题速递·数学》四川省雅安市2020届高三第一次诊断性考试数学(文)试题(已下线)调研测试二(A卷 基础过关 检测)-2021年高考数学(文)一轮复习单元滚动双测卷广西柳江中学2021届高三(11月6日)一模模拟考数学文科试题云南省大理州2021届高三二模数学(理)试题
9 . 判断下列命题是否正确,正确的说明理由,错误的举例说明.
(1)一条直线平行于一个平面,另一条直线与这个平面垂直,则这两条直线互相垂直;
(2)如果平面
平面
,平面
平面
,那么平面
与平面
所成的二面角和平面
与平面
所成的二面角相等或互补;
(3)如果平面
平面
,平面
平面
,那么平面
平面
.
(1)一条直线平行于一个平面,另一条直线与这个平面垂直,则这两条直线互相垂直;
(2)如果平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a60be170a52db82cf37b30db0cde26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943b765718479c160ba61ec5c6f8c5f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4a520571d7d098e1b70a671a72ce4e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e12ee28006ffc4b287e6762b01608852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943b765718479c160ba61ec5c6f8c5f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e12ee28006ffc4b287e6762b01608852.png)
(3)如果平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa807136194c18d3ac58902c67f9333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f11b05e61a53d2ee748d8da1fefd7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa807136194c18d3ac58902c67f9333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
您最近一年使用:0次
2020-02-03更新
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641次组卷
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3卷引用:人教A版(2019) 必修第二册 逆袭之路 第八章 8.6 空间直线、平面的垂直 小结