1 . 如图,圆柱的轴截面
是边长为2的正方形,
为圆柱底面圆弧
的两个三等分点,
为圆柱的母线,点
分别为线段
上的动点,经过点
的平面
与线段
交于点
,以下结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f8accdb21a85e7251360bdb6b6953a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8856a6bbd1648fef7aaa384366e9016f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff29e8c1d123c806132f9b8d8c4e13f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8ec66d29e434a5eb44f03c58683354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/29/97d0f312-b1db-4766-93ae-c91aaf8282ae.png?resizew=144)
A.![]() |
B.若点![]() ![]() ![]() |
C.若平面![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
解题方法
2 . 如图所示,在长方体
中,点
是棱
上的一个动点,若平面
与棱
交于点
,给出下列命题:①四棱锥
的体积恒为定值;②直线
与直线
交于点
,直线
与直线
交于点
,则
、
、
三点共线;③当截面四边形
的周长取得最小值时,满足条件的点
至少有两个;④
为底面
对角线
和
的交点,在棱
上存在点
,使
平面
,其中真命题是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/519064ed-ae9c-46d2-8dbe-dbafecd6ad43.png?resizew=158)
![](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/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a83c0b8db2205a6815811aa4ff5390f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b492d99c54c1d881aa0532d918c19389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408871c2b71ef88d6f556ce53cf73cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6069dc466eec75bbeb3d5c9b51cb3a70.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/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/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3869b3d43cd1d050dac2baecc169f957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4cffe5e9a3c0f5d2e3ac65fa30587d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/519064ed-ae9c-46d2-8dbe-dbafecd6ad43.png?resizew=158)
A.①②③ | B.②③④ | C.①②④ | D.①③④ |
您最近一年使用:0次
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4卷引用:内蒙古赤峰市2023学年高三二模数学理科试题
内蒙古赤峰市2023学年高三二模数学理科试题(已下线)专题12立体几何(选填)(已下线)第一章 点线面位置关系 专题四 共线问题 微点2 立体几何共线问题的解法综合训练【基础版】四川省成都市金苹果锦城第一中学2024届高三上学期期中数学(理)试题
解题方法
3 . 在棱长为2的正方体
中,P是侧面
上的一个动点(不包含四个顶点),则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
A.三角形![]() |
B.存在点P,满足DP//平面![]() |
C.存在点P,满足![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
2023-04-24更新
|
998次组卷
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3卷引用:山东省菏泽市2023届高三二模数学试题
名校
解题方法
4 . 如图,平行六面体
中,点P在对角线
上,
,平面
平面
.
三点共线;
(2)若四边形
是边长为2的菱形,
,
,求二面角
大小的余弦值.
![](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/a23f01af749100e1888bba06268843db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f2ff4c165222af48ba96a6014276b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b70c74a0f397e6e3e6d6f25429360a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d294d69caac577339f11f477b2047e.png)
您最近一年使用:0次
2023-04-16更新
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3134次组卷
|
5卷引用:安徽省安庆市示范高中2023届高三下学期4月联考数学试卷
2023·全国·模拟预测
解题方法
5 . 在几何体
中,平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
平面
,
,
,
平面
,底面
为直角梯形.若
,
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/29/276abe2b-7573-4857-b948-bc5763379230.png?resizew=158)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc81d42ad20eb0b0ca0807e5a4c3ceb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099451f05b3e6e1857697f130f8c2969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25e8fc3dda4f8b45491514b6e22a962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c142b575f24964f25dac779e1422f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c019a02b86381c30a62fd8abeb7c93e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/29/276abe2b-7573-4857-b948-bc5763379230.png?resizew=158)
A.![]() |
B.![]() |
C.AC与![]() |
D.几何体![]() |
您最近一年使用:0次
解题方法
6 . 在棱长为1的正方体
中,点
分别是棱
的中点,
是侧面
上的动点.且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ad3a1ea6790177130e16c2124984087.png)
平面
,则点
的轨迹长为__________ .点
到直线
的距离的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ae536809b1161fd4e83fdc7f42be96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334bd1a151c0a42ca813cb6b839ce45c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ad3a1ea6790177130e16c2124984087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
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2023-03-14更新
|
3601次组卷
|
6卷引用:广东省广州市2023届高三综合测试(一)数学试题
广东省广州市2023届高三综合测试(一)数学试题(已下线)数学(云南,安徽,黑龙江,山西,吉林五省新高考专用)(已下线)考点11 空间距离 2024届高考数学考点总动员【练】重庆市七校2023-2024学年高二上学期期末联考数学试题(已下线)空间向量与立体几何(已下线)第三章 空间轨迹问题 专题二 立体几何中位置关系类动点轨迹问题 微点2 立体几何中位置关系类动点轨迹问题综合训练【培优版】
名校
解题方法
7 . 在棱长均相等的四面体
中,
为棱
不含端点
上的动点,过点A的平面
与平面
平行
若平面
与平面
,平面
的交线分别为
,
,则
,
所成角的正弦值的最大值为__________ .
![](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/88f68ab04f9c4dd52bd4311d153c72cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2023-03-08更新
|
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8卷引用:浙江省宁波市2023届高三上学期一模数学试题
浙江省宁波市2023届高三上学期一模数学试题河南省新乡市第一中学2023届高三三轮冲刺能力测试第六测理科数学试题(已下线)专题07 立体几何小题常考全归类(精讲精练)-1湖北省2022-2023学年高三下学期3月调研数学试题(已下线)专题25 异面直线所成角-2(已下线)专题7-2 立体几何压轴小题:角度与动点、体积(讲+练)-3(已下线)第02讲 空间点、直线、平面之间的位置关系(六大题型)(讲义)-2河北省沧州市泊头市第一中学2023-2024学年高一下学期5月月考数学试题
名校
解题方法
8 . 直四棱柱
中,底面
为菱形,
,
,P为
中点,点
在四边形
内(包括边界)运动,下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/8c6fd004-caff-49ab-996d-6611edcf0079.png?resizew=164)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991451c5002137302527700e195220e3.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/82b724168afaee2ecddf97257180be18.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/8c6fd004-caff-49ab-996d-6611edcf0079.png?resizew=164)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
2023-02-25更新
|
1135次组卷
|
3卷引用:吉林省东北师范大学附属中学2022-2023学年高三下学期第二次模拟考试数学试题
吉林省东北师范大学附属中学2022-2023学年高三下学期第二次模拟考试数学试题福建省德化第一中学2023-2024学年高二上学期第一次质量检测数学试题(已下线)考点17 立体几何中的定值问题 2024届高考数学考点总动员【练】
名校
解题方法
9 . 如图,在棱长为1的正方体
中,P为棱
的中点,Q为正方形
内一动点(含边界),则下列说法中不正确 的是( )
![](https://img.xkw.com/dksih/QBM/2022/10/7/3082428759613440/3082833397030912/STEM/4d8efa58d1de47fe8ad6aaeef5805373.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72545bef56c4e32d1b76489bd32c3842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86814dbae9a5343d69bb4647900b3bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e5e9bf7536a8512ef10452ab5dda5be.png)
![](https://img.xkw.com/dksih/QBM/2022/10/7/3082428759613440/3082833397030912/STEM/4d8efa58d1de47fe8ad6aaeef5805373.png?resizew=189)
A.若![]() ![]() |
B.存在Q点,使得![]() ![]() |
C.当且仅当Q点落在棱![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
2022-10-07更新
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2548次组卷
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7卷引用:全国乙卷2023届高三上学期第一次高考模拟考试数学试卷
10 . 三棱锥
对棱相等,且
,
,
,点
分别是线段
,
的中点,直线
平面
,且
与平面
、平面
、平面
、平面
均有交线,若这些交线围成一个平面区域
,则
的面积的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f37c0f4936e49b3acbcb6b38d9ebb3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b61346bd4091070ba84a4046f87f365.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/7bef5239ddbb0972700ce01daf9ee7cf.png)
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