名校
1 . 在四棱锥
中,四边形
是边长为2的菱形,
,
,
,平面
平面
,
点是
内的一个动点(含边界),且满足
,则
点所形成的轨迹长度是__ .
![](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/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c5ace226a547e68702df548b08cb5a.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56a51ca347014b2f1d18c307a392f5c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
2020-07-17更新
|
966次组卷
|
9卷引用:湖北省华大新高考联盟名校2020届高三(5月份)高考数学(理科)模拟试题
湖北省华大新高考联盟名校2020届高三(5月份)高考数学(理科)模拟试题湖南省湘潭市2020届高三下学期第四次模拟考试理科数学试题华大新高考联盟名校2020届高考预测考试5月数学理科试题浙江省宁波市效实中学2020-2021学年高二上学期期中数学试题(已下线)【新东方】杭州新东方数学试卷409北京市第二中学2023届高三校模数学试题海南省海口市第四中学2023-2024学年高二上学期第一次月考数学试题(已下线)模块六 立体几何 大招7 动点轨迹的确定(已下线)第三章 空间轨迹问题 专题三 立体几何轨迹长度问题 微点1 立体几何轨迹长度问题【培优版】
2 . 如图,在矩形
中,
,
,将矩形
(及其内部)绕
旋转一周形成圆柱,已知
长为
,AC为圆O的直径,B为圆周上的一点,且与
在平面
的同侧.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/2bbf2088-4335-49b8-984f-a329ebea6d0a.png?resizew=147)
(1)求证:
;
(2)若点B恰为
在圆O所在平面上的投影,求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2558d8d867325a0460ec7f638d5dfd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e32a859e1616f7a7e4202d58d030794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2558d8d867325a0460ec7f638d5dfd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a3d5d669ac76a2ffb07da81d949adf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2558d8d867325a0460ec7f638d5dfd3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/2bbf2088-4335-49b8-984f-a329ebea6d0a.png?resizew=147)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8a2f9862ddd955ab46721ff764f2ec.png)
(2)若点B恰为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51f6d38ab882138456214e0f541c141.png)
您最近一年使用:0次
解题方法
3 . 如图所示,已知D、E、F分别是正四面体的棱
、
、
上的点.
![](https://img.xkw.com/dksih/QBM/2020/7/3/2498191260467200/2498593127251968/STEM/7e13453bc8ca47ac9cd88ea1478bdf14.png?resizew=176)
(1)若
,求证:
;
(2)若
,
,且
,求四面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2020/7/3/2498191260467200/2498593127251968/STEM/7e13453bc8ca47ac9cd88ea1478bdf14.png?resizew=176)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3153c876ab20d85f8c06a860ad3cb57c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2484662ae40c406b054d14a7f9e118.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868d2ccc04b1dc6443303902230f26bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d49d867da7b4997cce55c3d5345a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd1bc6147d69777b26a35d48522f7e.png)
您最近一年使用:0次
解题方法
4 . 如图,在四棱柱
中,四边形ABCD是边长等于2的菱形,
,
平面ABCD,O,E分别是
,AB的中点,AC交DE于点H,点F为HC的中点
![](https://img.xkw.com/dksih/QBM/2020/7/3/2498190406008832/2498577785856000/STEM/fcfa2ceac85949baa929f7086e24f71b.png?resizew=258)
(1)求证:
平面
;
(2)若OF与平面ABCD所成的角为60°,求三棱锥
的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dbf31dfd36aa456a63bafea8bc1985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://img.xkw.com/dksih/QBM/2020/7/3/2498190406008832/2498577785856000/STEM/fcfa2ceac85949baa929f7086e24f71b.png?resizew=258)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588cd177023e3b1501e84d0823361b56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c9f260496ba23993238601a89eca5c.png)
(2)若OF与平面ABCD所成的角为60°,求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9666b03b544efac31b8f8ed7ddb7a427.png)
您最近一年使用:0次
名校
解题方法
5 . 如图,三棱锥
中,侧面
是边长为
的正三角形,
,平面
平面
,把平面
沿
旋转至平面
的位置,记点
旋转后对应的点为
(不在平面
内),
、
分别是
、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/91c70963-ba47-442c-8542-9aeb8fb2dad4.png?resizew=164)
(1)求证:
;
(2)求三棱锥
的体积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45593f8565f51193d4d7a9037281dbd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/91c70963-ba47-442c-8542-9aeb8fb2dad4.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1fbbed1dbff0bdf2de260443749e151.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7177604c344265acf32365dd3a4675.png)
您最近一年使用:0次
2020-07-02更新
|
537次组卷
|
6卷引用:湖北省黄冈市麻城市实验高级中学2020届高三下学期第六次模拟文科数学试题
解题方法
6 . 已知如图1直角
中,
,
,
,点
为
的中点,
,将
沿
折起,使面
面
,如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/f0d95c1b-5273-4bc5-909c-35a20a33ed87.png?resizew=319)
(1)求证:
;
(2)图2中,求
点到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3f1d2807be6d574e04ca9c6e721b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ccb83d132af8310c48b0c9e84e0bcb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17580410bf63dba4fe164265afaac4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/f0d95c1b-5273-4bc5-909c-35a20a33ed87.png?resizew=319)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5621c78ba894e47b6161e27a664093a0.png)
(2)图2中,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
您最近一年使用:0次
解题方法
7 . 如图,在四棱锥
中,
平面
,
是菱形,
,
,E是
上的一动点,当点E满足_____________ 时,
;在(1)的条件下,三棱锥
的外接球的体积为________________ .
![](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/2b96fac11d72f72c805dbddb8da72d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a993740d025a458cd292dd77c63970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0aaa5cf7dafac1b64eafe84cae5674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b565e518d475a50358fedff2f0bb8dec.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/d8058689-c55f-4ee8-8434-3298def8df7f.png?resizew=197)
您最近一年使用:0次
解题方法
8 . 在三棱柱
中,已知
,
平面
,则下列选项中,能使异面直线
与
相互垂直的条件为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
A.![]() | B.![]() |
C.四边形![]() | D.四边形![]() |
您最近一年使用:0次
2020-04-18更新
|
285次组卷
|
4卷引用:湖北省武汉市江夏一中、汉阳一中2019-2020学年高三下学期4月联考理科数学试题
名校
9 . 如图,已知边长为2的正三角形
所在的平面与菱形
所在的平面垂直,且
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/4a9ac15d-4b44-4ec4-85c4-8f246d61fd4a.png?resizew=228)
(1)求证:
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/4a9ac15d-4b44-4ec4-85c4-8f246d61fd4a.png?resizew=228)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8aed88ad640f3d76735f1e5dbc04b23.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c92b3ea9c1610b4d3c4d1becaaf7292a.png)
您最近一年使用:0次
名校
10 . 三棱锥
中,点
是
斜边
上一点.给出下列四个命题:
①若
平面
,则三棱锥
的四个面都是直角三角形;
②若
,
,
,
平面
,则三棱锥
的外接球体积为
;
③若
,
,
,
在平面
上的射影是
内心,则三棱锥
的体积为2;
④若
,
,
,
平面
,则直线
与平面
所成的最大角为
.
其中正确命题的序号是__________ .(把你认为正确命题的序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f7e633fb547fd821e5a3cbf1bd1f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6deecf9ccb7b7879455050633219e09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f479c521ce8a3e0013347d39a7d16e0.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ecf4712f4ce3a52ccc695c1774cbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
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2020-04-13更新
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3卷引用:2020届湖北省黄冈中学高三下学期4月高考模拟测试数学(理)试题