名校
1 . 如图所示,六面体
的底面
是菱形,
,且
平面
,平面
与平面
的交线为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/f4d99d17-80b5-45a3-ba91-65b5789c1511.png?resizew=187)
(1)证明:直线
平面
;
(2)已知
,三棱锥
的体积
,若
与平面
所成角为
,求
的取值范围.
![](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/423246c62d2e44982a41529aa596f879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25e8fc3dda4f8b45491514b6e22a962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27df632340d30ae92120b6b78dc3124.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/f4d99d17-80b5-45a3-ba91-65b5789c1511.png?resizew=187)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df740160690029ac1e730c85f20347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96946eaa2878fb8433eb2a97797a32b.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeedb5f361a1baff6338436fff6c471d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35feff73aedbdbae8c41d45bdc9decce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f321df6a9aa292ba649ae0038e47f59e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408871c2b71ef88d6f556ce53cf73cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc78a86b12ba0b4553135a3a635fc418.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
您最近一年使用:0次
2023-03-09更新
|
2161次组卷
|
3卷引用:河南省许昌市鄢陵县第一高级中学2023届高三下学期高考全真模拟押题数学(理)试题
名校
解题方法
2 . 在多面体
中,平面
平面
,四边形
为直角梯形,
,
为
中点,且点
满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/00fd4f4e-ba12-46ac-8e5f-f5d78f1b4a43.png?resizew=145)
(1)证明:
平面
;
(2)求多面体
的体积最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c99e6d75d606b5cae9392ecca969200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9d54cbbf601f4583659771eb534997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41bf5ba46efcc6dbc8e527a94ed2343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08dcecfcdc15fbd0fc57f5f1d8a6f0d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e27e7ca8862c8843d15080709a88fc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/00fd4f4e-ba12-46ac-8e5f-f5d78f1b4a43.png?resizew=145)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf60ad9db3411f35704fa88d86bfef5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
您最近一年使用:0次
2023-03-02更新
|
462次组卷
|
3卷引用:河南省信阳高级中学2023届高三二轮复习滚动测试8文科数学试题
名校
解题方法
3 . 如图,圆柱
的侧面积为
,高为2,AB为⊙
的直径,C,D分别为⊙
,⊙
上的点,直线CD经过
的中点O.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/e2c5f456-07f4-41b6-a3f9-bc44ee9691dd.png?resizew=141)
(1)若
,证明:AB⊥CD;
(2)若直线AB与直线CD所成角的余弦值为
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b3a91ccf6028608cd03df7072f6536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/e2c5f456-07f4-41b6-a3f9-bc44ee9691dd.png?resizew=141)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
(2)若直线AB与直线CD所成角的余弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821309f088a175c00dc0f4828334503d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
您最近一年使用:0次
4 . 在如图所示的多面体ABCDE中,
平面ABC,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/5c2f7316-ed22-4dd3-919d-636f667f5310.png?resizew=163)
(1)证明:平面
平面BDE;
(2)求多面体ABCDE的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3af4a9a466a3b1a794f6190c860806de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c413b009ee2bdbb7f76db5a6bcc5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e29b56159246cc50cfa21ba71241a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04725e51b4870658f74de79403e3898f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/5c2f7316-ed22-4dd3-919d-636f667f5310.png?resizew=163)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5f0cfc1049f84a04c81bd213afb8d9.png)
(2)求多面体ABCDE的体积.
您最近一年使用:0次
2023-02-26更新
|
588次组卷
|
4卷引用:河南省名师联盟2023届高三下学期2月质量检测(联考)文科数学试题
名校
5 . 在四棱锥
中,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/29c28454-4fc9-42ae-a302-0a87ce150a25.png?resizew=188)
(1)若
,证明:平面
平面ABCD;
(2)若直线PB与平面ABCD所成的角为
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a81ae68b58bb0407f08524d1550bbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/29c28454-4fc9-42ae-a302-0a87ce150a25.png?resizew=188)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbb42439079fa563100decbad833e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
(2)若直线PB与平面ABCD所成的角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2023-02-25更新
|
354次组卷
|
2卷引用:河南省名校联盟2023届高三大联考(2月)文科数学试题
名校
解题方法
6 . 如图,在四棱锥
中,底面ABCD为梯形,
平面ABCD,
,
,
,
,E为PC的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/4d2b4fe5-ac4b-4493-986c-13fc7e9dc990.png?resizew=177)
(1)证明:
平面PBC.
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95475bfc06e884754eb4a455c3f434e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304e9d63e7fdc531f4f7b805b765a1b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/4d2b4fe5-ac4b-4493-986c-13fc7e9dc990.png?resizew=177)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df6a3413b77478c8d4e1e0389dbf5984.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2023-02-25更新
|
495次组卷
|
6卷引用:河南省2022-2023学年高三下学期2月模拟考试(一)文科数学试题
名校
解题方法
7 . 如图,在三棱柱
中,
平面
,
是等边三角形,D,E,F分别是棱
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/e18e8890-e1ed-4b38-bd32-ab2594286591.png?resizew=140)
(1)证明:
平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/e18e8890-e1ed-4b38-bd32-ab2594286591.png?resizew=140)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a5edfe97aeab0cf16b40fa9d2e15f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bff3ccea5989c60e51e321af3f53f54.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb9d22cbfa24a891199db1a29e00a48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/906c2d40c2a0f46409537c306e0c7777.png)
您最近一年使用:0次
2023-02-24更新
|
783次组卷
|
3卷引用:河南省安阳市重点高中2022-2023学年高三下学期2月联考文科数学试题
名校
8 . 如图,圆柱
的侧面积为
,高为1,AB为
的直径,C,D分别为
,
上的点,直线CD经过
的中点O.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/76286735-26b1-47d3-b5f9-f2ad72dfddaa.png?resizew=139)
(1)若
,证明:
;
(2)若直线CD与平面ABC所成角的正弦值为
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e2d7c958e99bcd9d7f251c19ee3544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd73875650e1538c4c61d5e16d3db29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0385df6c7f8ee7ab503b6ed35933695b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd73875650e1538c4c61d5e16d3db29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/76286735-26b1-47d3-b5f9-f2ad72dfddaa.png?resizew=139)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e3c1c236141d6118429fade0a9b9d.png)
(2)若直线CD与平面ABC所成角的正弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f29837db4ec4d0aeb8d7ad9fcb316d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
您最近一年使用:0次
9 . 如图①,在平面四边形
中,
,
,
.将
沿着
折叠,使得点
到达点
的位置,且二面角
为直二面角,如图②.已知
分别是
的中点,
是棱
上的点,且
与平面
所成角的正切值为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/80a44054-f770-4ec7-9132-c8cd362ae2ac.png?resizew=316)
(1)证明:平面
平面
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503c035fc57fb25aede1445af9aa2747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6906f59d09ce31956d6f5ea2b23fc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259784d576a060ec0512ea7d1d3b50a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbbe22e47027caa1f678df97e01e97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70505bc5e2d5d801742ab489bd6c0570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a83ccde054ec5f3473ede6c07e484290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/80a44054-f770-4ec7-9132-c8cd362ae2ac.png?resizew=316)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e4c805aba48958328ecf06ce42f296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8112fd703f5ebbde4192592593734b1.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075d3daa131883d4a2dea29831efcbce.png)
您最近一年使用:0次
2023-02-19更新
|
748次组卷
|
7卷引用:河南省部分名校2022-2023学年高三下学期学业质量联合检测文科数学试题
河南省部分名校2022-2023学年高三下学期学业质量联合检测文科数学试题河南省濮阳市第一高级中学2023届高三模拟质量检测文科数学试题2023届高三全国学业质量联合检测2月大联考文科数学试题(已下线)专题20 空间几何解答题(文科)-2(已下线)考点15 立体几何中的折叠问题 2024届高考数学考点总动员【练】(已下线)立体几何专题:折叠问题中的证明与计算5种题型陕西省西安市长安区第一中学2022-2023学年高一下学期5月月考数学试题
10 . 如图,在直三棱柱
中,
,
,D,E分别是
和
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/e53b2837-3a7a-46f2-b7c0-2800f584e4c2.png?resizew=126)
(1)求证:平面
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8817091d0f4b7d7ac6df560cb63c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e53149090ce976f12fddb36e2d205c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/e53b2837-3a7a-46f2-b7c0-2800f584e4c2.png?resizew=126)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f5ba965420dfd5aa4da211682df096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42020cfacd62b300cad053981bab9e0b.png)
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