解题方法
1 . 如图,
为正方体,下面结论中正确的是___________ .(把你认为正确的结论都填上)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/de8ec191-b07d-47fa-96ac-db3fdf3d3c02.png?resizew=175)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
②
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cfdc6224181d44e63aab43ddaf07ef.png)
③
与底面
所成角的正切值是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7881094ce2f907c3aaf664318ecd3e2d.png)
④过点
与异面直线
与
成
角的直线有2条.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/de8ec191-b07d-47fa-96ac-db3fdf3d3c02.png?resizew=175)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4645450a006f2c20087486d0833afbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cfdc6224181d44e63aab43ddaf07ef.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6392ebb67310d3a4cd0332c06c70390b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f84d1ed2ff6f93bf229c738c58c15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7881094ce2f907c3aaf664318ecd3e2d.png)
④过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9721059d158853671eaf19e39769b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ca5ec71fe00c66415888cdb4921fe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在正四棱锥
中,
,
,
分别是
,
,
的中点,动点
在线段
上运动时,下列四个结论:①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4862958e60c245dc9a5d9cb57d31eb4.png)
;②
;③
面
;④
面
中恒成立的为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4862958e60c245dc9a5d9cb57d31eb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d1aba56e04a373cefa813b31a3d99f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3834a4bb20d2b065695dbf53091b065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5000fea066102e62cf2128ccbbd2b3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4862958e60c245dc9a5d9cb57d31eb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6f6dfdbe7d39891c35f67e1a95c7f.png)
![](https://img.xkw.com/dksih/QBM/2021/3/14/2677868871032832/2685640297308160/STEM/945388bc535740a5a28b5a810acd4e74.png?resizew=174)
您最近一年使用:0次
2021-03-25更新
|
177次组卷
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2卷引用:山西省大同市第一中学校2021-2022学年高一下学期4月学情检测数学试题
3 . 如图所示,在正方体
中,点E是棱
上的一个动点,平面
交棱
于点F.给出下列四个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/6f702186-b712-45ce-ba19-f2420cf26070.png?resizew=185)
①存在点E,使得
//平面
;
②存在点E,使得
⊥平面
;
③对于任意的点E,平面
⊥平面
④对于任意的点E,四棱锥
的体积均不变
其中,所有正确结论的序号是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a83c0b8db2205a6815811aa4ff5390f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/6f702186-b712-45ce-ba19-f2420cf26070.png?resizew=185)
①存在点E,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6069dc466eec75bbeb3d5c9b51cb3a70.png)
②存在点E,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6069dc466eec75bbeb3d5c9b51cb3a70.png)
③对于任意的点E,平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6069dc466eec75bbeb3d5c9b51cb3a70.png)
④对于任意的点E,四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b492d99c54c1d881aa0532d918c19389.png)
其中,所有正确结论的序号是
您最近一年使用:0次
2021-02-05更新
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281次组卷
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13卷引用:【全国百强校】山西大学附属中学2018-2019学年高二10月模块诊断数学试题
【全国百强校】山西大学附属中学2018-2019学年高二10月模块诊断数学试题(已下线)2013-2014学年北京海淀区高二上学期期末考试文科数学试卷贵州省铜仁市第一中学2017-2018学年高二下学期开学考试数学(理)试题江西省吉安市几所重点中学2018-2019学年高二上学期联考数学(理)试题(已下线)【全国百强校】河北省衡水中学2019届高三上学期五调考试数学(文)试题【全国百强校】山东省聊城市第一中学2019届高三上学期期中考试数学(理)试题重庆市渝北区松树桥中学校2019-2020学年高二上学期第一次段考考数学试题湖北省武汉市第二中学2018-2019学年高一下学期期末数学(理)试题(已下线)专题25 立体几何中的最值,探索性问题-冲刺2020高考跳出题海之高三数学模拟试题精中选萃四川省射洪市射洪中学校(英才班)2019—2020学年高二上期期末数学(文)试题四川省射洪市射洪中学(英才班)2019—2020学年高二上期期末数学(理)试题江西省兴国县第三中学2021届高三上学期第四次月考数学(理)试题陕西省西安市长安区第一中学2021-2022学年高一下学期期末数学试题
2010·浙江嘉兴·一模
名校
解题方法
4 . 如图所示,在正方体
中,
分别是棱
、
的中点,
的顶点P在棱
与棱
上运动,有以下四个命题:
![](https://img.xkw.com/dksih/QBM/2020/11/9/2589447185227776/2591149047930880/STEM/3d27731cf5514d0bbec214c30598fa3b.png?resizew=178)
(1)平面
;
(2)平面
⊥平面
;
(3)
在底面
上的射影图形的面积为定值;
(4)
在侧面
上的射影图形是三角形.
其中正确命题的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deec8447b2ed46fd7b3414b8fb9830bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://img.xkw.com/dksih/QBM/2020/11/9/2589447185227776/2591149047930880/STEM/3d27731cf5514d0bbec214c30598fa3b.png?resizew=178)
(1)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1ce27cc099d81d330333186a62b2a8.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35bf3027652cb34dcf0f56f93b61320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09104d630957bf95bda31af7499ad0cb.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deec8447b2ed46fd7b3414b8fb9830bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deec8447b2ed46fd7b3414b8fb9830bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538b539984b64f0626bdb2195cc3068b.png)
其中正确命题的序号是
您最近一年使用:0次
2020-11-12更新
|
1330次组卷
|
14卷引用:山西省山西大学附属中学校2019-2020学年高二上学期期中数学(理)试题
山西省山西大学附属中学校2019-2020学年高二上学期期中数学(理)试题山西省大学附属中学校2019-2020学年高二上学期期中数学(文)试题山西省山西大学附属中学、汾阳中学2020-2021学年高二上学期12月月考数学(理)试题山西省山西大学附属中学、汾阳中学2020-2021学年高二上学期12月月考数学(文)试题(已下线)2010年高考嘉兴一中适应性考试数学试题(理科)上海市浦东新区2017-2018学年第一学期高三数学期中质量检测试卷辽宁省六校协作体2017-2018学年高一下学期开学考试数学试题江西省奉新县第一中学2020-2021学年高二上学期第二次月考数学(文)试题(已下线)第33练 立体几何的综合-2021年高考数学(文)一轮复习小题必刷(已下线)第31练 直线、平面垂直的判定与性质-2021年高考数学(文)一轮复习小题必刷(已下线)专题07 平行与垂直的证明-备战2021年高考数学二轮复习题型专练(新高考专用)陕西省西安市第三中学2020-2021学年高一上学期第三次诊断性测试数学试题(已下线)课时42 空间平面与平面的位置关系-2022年高考数学一轮复习小题多维练(上海专用)河南省重点高中2021-2022学年高二上学期阶段性调研联考一文科数学试题
名校
解题方法
5 . 如图,在边长为2的正方体
中,点
在正方体的表面上移动,且满足
,则满足条件的所有点
构成的平面图形的面积是______ .
![](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/e7dbe1bf4938c1f28922632724da16e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/4ba13aa2-95a0-44ff-afbb-a53538666597.png?resizew=165)
您最近一年使用:0次
2020-11-04更新
|
349次组卷
|
4卷引用:山西省大同市灵丘一中、广灵一中2020-2021学年高一下学期期中联考数学试题
名校
解题方法
6 . 如图,在
中,
,直线
过点
且垂直于平面
,动点
,当点
逐渐远离点
时,
的大小会_____ .(填“变大”“变小”或“不变”)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b76843381162198a14f2faf5e2518b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df0ba997bb8f5b2f2a2b677391ebc22.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/4/83881dc3-a3d8-40d4-ba80-1e6ac27228c4.png?resizew=158)
您最近一年使用:0次
2020-10-09更新
|
90次组卷
|
2卷引用:山西省临猗县临晋中学2020-2021学年高二上学期9月月考数学(理)试题
解题方法
7 . 如图,
为正方体,下面结论中正确的结论是________ .(把你认为正确的结论都填上)
①
平面
;
②
平面
;
③过点
与异面直线
与
成
角的直线有
条;
④二面角
的正切值是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f306ff6d237cd9d847aa109acf9333d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86eec8526479272d15bb3b171a46de0.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86eec8526479272d15bb3b171a46de0.png)
③过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd4c85bb98a2a0afddd7ed92578ad2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
④二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52bd8b014ebd8b1cc34b66912b0b9ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/4/6c15a561-0521-48c9-9f1f-d29a88c35030.png?resizew=145)
您最近一年使用:0次
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解题方法
8 . 在四棱锥
中,底面四边形
为矩形,
平面
,
,
分别是线段
的中点,点
在线段
上,若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a15d677ee2b4f93748dd8ee91cd8d3d.png)
____________ .
![](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/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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228eb4be2cfb943b9869c1bf7bbb812e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a281827923afc8ef7bf59ea9dfa970d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60afa1d5fb0a8846b827d281baea6a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a15d677ee2b4f93748dd8ee91cd8d3d.png)
您最近一年使用:0次
2020-05-09更新
|
502次组卷
|
4卷引用:山西省晋中市平遥县第二中学校2022-2023学年高一下学期5月月考数学试题
名校
解题方法
9 . 正四棱锥
底面边长为
,高为
,
是边
的中点,动点
在四棱锥表面上运动,并且总保持
,则动点
的轨迹的周长为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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7卷引用:山西省山西大学附属中学2019-2020学年高三下学期3月(总第十一次)模块诊断数学(理)试题
10 . 在四面体
中,
,
,
,则四面体
外接球的表面积是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
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2019-10-29更新
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2卷引用:山西省2019-2020学年高二上学期10月联合考试数学(理)试题