20-21高三上·江苏南通·期末
名校
解题方法
1 . 如图,在边长为
的正方形
中,点
是边
的中点,将
沿
翻折到
,连结
,在
翻折到
的过程中,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f9fba8a4098c1a0515286eb8d616dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb62dd4766d11cfec3aee092b99e40c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c3cc1f331dbb2248b0829039df7f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f9fba8a4098c1a0515286eb8d616dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb62dd4766d11cfec3aee092b99e40c.png)
A.存在某一翻折位置,使得![]() |
B.当面![]() ![]() ![]() ![]() |
C.四棱锥![]() ![]() |
D.棱PB的中点为N,则CN的长为定值 |
您最近一年使用:0次
2022-04-01更新
|
1423次组卷
|
15卷引用:江苏省南通市如皋市2020-2021学年高三上学期期末数学试题
(已下线)江苏省南通市如皋市2020-2021学年高三上学期期末数学试题(已下线)专题20 立体几何角的计算问题(测)-2021年高三数学二轮复习讲练测(新高考版)(已下线) 专题18 几何体的表面积与体积的求解 (练)-2021年高三数学二轮复习讲练测(新高考版)江苏省南京市宁海中学2020-2021学年高一下学期6月月考数学试题江苏省扬州中学2020-2021学年高一下学期5月月考数学试题江苏省南京师范大学苏州实验学校2021-2022学年高一日新班上学期12月月考数学试题(已下线)第03讲 空间图形的表面积和体积-【帮课堂】2021-2022学年高一数学同步精品讲义(苏教版2019必修第二册)广东省广州中学2022-2023学年高一下学期期中数学试题安徽省安庆市第一中学2022-2023学年高一下学期第二次段考数学试题(已下线)第八章《立体几何初步》单元达标高分突破必刷卷(基础版)《考点·题型·技巧》河北省邯郸市鸡泽县第一中学2023-2024学年高二上学期开学考数学试题海南省琼海市海桂中学2023-2024学年高二上学期12月教学检测数学试题(三)浙江省金华市武义第一中学2023-2024学年高二上学期9月检测数学试题(已下线)8. 6. 3 平面与平面垂直(第1课时) -【上好课】(人教A版2019必修第二册)(已下线)第13章 立体几何初步 单元综合检测(重难点)-《重难点题型·高分突破》(苏教版2019必修第二册)
21-22高三上·江苏南通·阶段练习
名校
2 . 已知正方体
的棱长为2,点P满足
,则下列选项正确的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81f3d7d77e49e423e1315d629beb677.png)
A.若![]() ![]() ![]() ![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
解题方法
3 . 已知圆锥SO的顶点为S,母线SA,SB,SC两两垂直,且
,则圆锥SO的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f217072b9918ee10f36f166ba69a1639.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-12-10更新
|
630次组卷
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3卷引用:江苏省南通市2021-2022学年高三上学期期中数学试题
江苏省南通市2021-2022学年高三上学期期中数学试题(已下线)热点08 立体几何-2022年高考数学【热点·重点·难点】专练(新高考专用)四川省成都市新津区成都外国语学校2022-2023学年高二上学期10月阶段性测试数学(理)试题
解题方法
4 . 在棱长为1的正方体
中,点
在线段
上,点
在线段
上,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
A.当![]() ![]() ![]() |
B.当![]() ![]() ![]() |
C.当![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
5 . 如图,在四棱锥
中,底面
为矩形,侧面
是正三角形,侧面
底面
,M是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/818da61e-c708-438a-8ce9-e5b5ee51fe68.png?resizew=199)
(1)证明:
平面
;
(2)若
,且二面角
的大小为30°,求四棱锥
的体积.
![](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/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/818da61e-c708-438a-8ce9-e5b5ee51fe68.png?resizew=199)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0edb1508fc95765f3bb316bcb5252d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a8e0c5bcf2d86726cd9f561b8ff5fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2021-10-31更新
|
884次组卷
|
2卷引用:江苏省南通市海安高级中学2021-2022学年高三上学期第一次月考数学试题
名校
解题方法
6 . 在正方体
中,
,点E,F分别为
,
中点,点P满足
,
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/da9bec13-3493-4602-a310-e26bdcc90796.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.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/9e8a8fe7caa654e8f50cff5adfb73299.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afe62a251f3d6dfb60ba2a42bdda534c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/da9bec13-3493-4602-a310-e26bdcc90796.png?resizew=162)
A.当![]() ![]() ![]() |
B.三棱锥![]() |
C.当![]() ![]() |
D.存在点P,二面角![]() |
您最近一年使用:0次
2021-10-31更新
|
772次组卷
|
3卷引用:江苏省南通市海安高级中学2021-2022学年高三上学期第一次月考数学试题
江苏省南通市海安高级中学2021-2022学年高三上学期第一次月考数学试题(已下线)考点16 空间向量与立体几何-2022年高考数学一轮复习小题多维练(新高考版)安徽省安庆市第一中学2022-2023学年高一下学期第二次段考数学试题
7 . 《算数书》竹简于上世纪八十年代出土在湖北省江陵县张家山,这是我国现存最早的有系统的数学典籍,其中记载有求“囷盖”的术:置如其周,令相承也.又以高乘之,三十六成一.该术相当于给出了由圆锥底面周长L与高h,计算其体积V的近似公式
,实际上是将圆锥体积公式中的圆周率近似取3.那么近似公式
,相当于将圆锥体积公式中π的近似取值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825b337153f7737570ac4dc34f92ccb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef59a77f86886b00a5fdfd30895fe8cb.png)
A.![]() | B.![]() | C.![]() | D.3 |
您最近一年使用:0次
20-21高一下·江苏南通·期中
名校
解题方法
8 . 如图,在四棱锥
中,
平面
,在直角梯形
中,
,
,
,
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/43047f6e-07f7-401f-a659-791035571b5e.png?resizew=127)
(1)求证:平面
平面
;
(2)在线段
上找一点
,使得
平面
,则满足题意的
点是否存在?若存在,求出点
的位置;若不存在,请说明理由.
(3)若
是
中点,
,
,
,
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ee81b6066188abee9d167b6c7f3f71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/43047f6e-07f7-401f-a659-791035571b5e.png?resizew=127)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac48b9ac8efbf41d6ab5242d247bd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b95d703163eac1f07410045600066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0be6ed6e769204f5047f9d52dd2fd1ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7f2424a84016755afad47abdda10368.png)
您最近一年使用:0次
名校
解题方法
9 . 已知三棱锥
内接于表面积为
的球中,面
面
,
,则三棱锥
体积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4d9a7c9b2ee0253a3a11d5117f9f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb187e82222519103efcebb263ef8f9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
您最近一年使用:0次
2021-08-24更新
|
588次组卷
|
2卷引用:江苏省南通市海安高级中学2020-2021学年高二下学期期末数学试题
名校
解题方法
10 . 在正方体
中,
为棱
的中点
![](https://img.xkw.com/dksih/QBM/2021/5/20/2725128771231744/2784532598226944/STEM/5dea805df1b54ad28e9befdbad275c41.png?resizew=173)
(1)求证:
平面
;
(2)求证:平面
平面
;
(3)若
,求三棱锥
的体积.
![](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://img.xkw.com/dksih/QBM/2021/5/20/2725128771231744/2784532598226944/STEM/5dea805df1b54ad28e9befdbad275c41.png?resizew=173)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7542b49ab149f2be8ba6b48392bef1f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/677d1863ff4d8ac1604b18149d4f320f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211ad5a06b505b8365a62c1946f3cb7.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6399b4760d2d830cf37136f8cdd6de34.png)
您最近一年使用:0次
2021-08-12更新
|
377次组卷
|
3卷引用:江苏省南通市如皋中学2020-2021学年高一(创新班)下学期第二次阶段考试数学试题