解题方法
1 . 如图,四边形ABCD是边长为2的正方形,E为边CD的中点,沿AE把
折起,使点D到达点P的位置,且
.
平面
;
(2)求三棱锥
的表面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06cb01443be899ef03dfe279af2ecfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53123d1ebece77f0405603fc35bd91f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4da035673ef0edcfae6b72fb5e5ba34a.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea806939ab65af688284de59a21488c.png)
您最近一年使用:0次
2 . 如图,在三棱锥
中,侧棱
底面
,且
,
,过棱
的中点
,作
交
于点
,连接
,
.
(1)证明:
;
(2)若
,三棱锥
的体积是
,求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587df01a98f499a9f361aafd8c3dac39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4a6a1e70241d600bc6c104313eac61.png)
![](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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/e75dd94d-92fc-4b7f-a681-7a0a8e1e8a7e.png?resizew=131)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaef9e92d148afff22761d5e027d3ee.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b115316e0fcd2ef46a4dd383472996e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0467b0675c3ecfb282cc88255284d3e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,在正四棱柱
中,
,
.点
、
、
、
分别在棱
、
、
、
上,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/8bf60171-60ef-4ddf-a465-52edf99e7b9b.png?resizew=128)
(1)求多面体
的体积;
(2)当点
在棱
上运动时(包括端点),求二面角
的余弦值的绝对值的取值范围.
![](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/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/777c6cf35158b0ecf7b6bd92de556cdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80de42aebe7de7021e3201a2622da469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e8c8d3c1ddb9b6d84eeffc331b9166.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/8bf60171-60ef-4ddf-a465-52edf99e7b9b.png?resizew=128)
(1)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b1e9b13e2641010a7d911f0cd269cf.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7fe763f8cc8e6aa1a0cea5370d44dca.png)
您最近一年使用:0次
2023-09-17更新
|
843次组卷
|
6卷引用:广西壮族自治区玉林市玉林市高三联考2024届高三上学期开学考试数学试题
广西壮族自治区玉林市玉林市高三联考2024届高三上学期开学考试数学试题(已下线)第七章 重难专攻(七)?立体几何中的综合问题 讲河北省保定市定州中学2023-2024学年高二上学期9月月考数学试题山东省招远市第二中学2023-2024学年高二上学期10月月考数学试题辽宁省大连市第八中学2023-2024学年高二上学期10月月考数学试题(已下线)专题02 空间向量与空间角、空间距离【考题猜想】-2023-2024学年高二数学上学期期中考点大串讲(人教A版2019选择性必修第一册)
4 . 如图,三棱锥A-BCD中,AB⊥平面BCD,
,E为AC的中点,F为AD的中点.
(1)证明:平面BEF⊥平面ABC;
(2)求多面体BCDFE的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41c5463bb6f2c53b2d514495fbf4cd46.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/30/230532a4-0a1e-4fea-978c-85d7eb511d3a.png?resizew=114)
(1)证明:平面BEF⊥平面ABC;
(2)求多面体BCDFE的体积.
您最近一年使用:0次
5 . 如图在多面体
中,
,
平面
,
为等边三角形,
,
,
,点M是AC的中点.
![](https://img.xkw.com/dksih/QBM/2023/5/21/3242442990895104/3246237177798656/STEM/f4984f99fb504f4a9ccb88f9e8df5c99.png?resizew=140)
(1)若点G是
的重心,证明:点G在平面
内;
(2)求点G到
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36723bd074d43a8c98d9bd416020042c.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/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b8173115f2297bc4c85bf7325fbef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f32a7f0fb3cc6eaa91ad3f44b9d5610.png)
![](https://img.xkw.com/dksih/QBM/2023/5/21/3242442990895104/3246237177798656/STEM/f4984f99fb504f4a9ccb88f9e8df5c99.png?resizew=140)
(1)若点G是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5bc0580c6c53d00438fcf63bcbc5179.png)
(2)求点G到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2fecaad729e54dc1c9cea29c27d362b.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,在四棱锥
中,平面
平面
,底面
为菱形,
为等边三角形,且
,
,
为
的中点.
(1)若
为线段
上动点,证明:
;
(2)求点
与平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a4426db778693c875e2dca9220875d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.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/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c231fb9aeaf4b73c2d835bb4c3d42b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/26/dd6d3c18-9366-4dff-ad71-996c66dc8ce9.png?resizew=176)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d26564a3cd8db7262fc41d069682e0b.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2023-05-25更新
|
1560次组卷
|
3卷引用:广西南宁市第三中学邕衡金卷2023 届高三校一模数学(文)试题
名校
解题方法
7 . 如图,在四棱台
中,底面四边形
为菱形,
,
,
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/15/9ebfff0f-a5a9-4acd-9d68-6087427a2f8a.png?resizew=189)
(1)证明:
;
(2)若
是棱
上一动点(含端点),求三棱锥
的体积.
![](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/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50cb59da6e7882e4328b766777ee15d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/15/9ebfff0f-a5a9-4acd-9d68-6087427a2f8a.png?resizew=189)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a382ccd078374f1efebb26a43599e596.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e744c49532637319edd47ad2dfe9857.png)
您最近一年使用:0次
2023-05-13更新
|
635次组卷
|
2卷引用:广西2023届高三毕业班高考模拟测试数学(文)试题
名校
解题方法
8 . 如图,在四棱锥
中,平面
平面
,已知底面
为梯形,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/a72410e5-089c-457a-bafa-39f8f75700df.png?resizew=162)
(1)证明:
.
(2)若
平面
,
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.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/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7785fb68d57824d863ead362bcb0d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fe532cad7a1f9279d58874aa4def00.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/a72410e5-089c-457a-bafa-39f8f75700df.png?resizew=162)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90197a948331e61db644266368017e3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9641d01140939c44450bf39773272af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
您最近一年使用:0次
2023-05-07更新
|
1598次组卷
|
4卷引用:广西桂林市、北海市2023届高三联合模拟考试数学(文)试题
广西桂林市、北海市2023届高三联合模拟考试数学(文)试题陕西省榆林市2023届高三四模文科数学试题四川省广安友谊中学2022-2023学年高二下学期5月月考文科数学试题(已下线)高一下学期期末模拟试题04-【同步题型讲义】
名校
解题方法
9 . 已知四棱锥
中,底面
为直角梯形,
平面
,
,
,
,
,
为
中点,过
,
,
的平面截四棱锥
所得的截面为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/4/60d03f35-7a27-4a8e-95aa-6ad937654395.png?resizew=185)
(1)若
与棱
交于点
,画出截面
,保留作图痕迹(不用说明理由),并证明
.
(2)求多面体
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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c2753753faf2cb9a0003aa8e3945159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80137ee8af4684ce558242d8b3f1459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/4/60d03f35-7a27-4a8e-95aa-6ad937654395.png?resizew=185)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](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/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1ead5e71d659442776937400b19e230.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/673d35c60271a1f86876bf4005eee23c.png)
您最近一年使用:0次
2023-05-03更新
|
1106次组卷
|
4卷引用:广西邕衡金卷2023届高三一轮复习诊断性联考数学(文)试题
广西邕衡金卷2023届高三一轮复习诊断性联考数学(文)试题(已下线)重难点6-2 空间几何体的交线与截面问题(8题型+满分技巧+限时检测)(已下线)高一数学下学期第二次月考01(范围:平面向量,解三角形,复数,立体几何)江西省新余市第一中学2022-2023学年高一下学期第二次月考数学试题
名校
解题方法
10 . 如图,在四棱锥
中,
是边长为1的正三角形,平面
平面
,
,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/de1b8752-f357-4381-9c25-9a1175d421d3.png?resizew=166)
(1)求证:
平面
;
(2)求
到平面
的距离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e29ed30f17b5944e4afc66ab1d5f7394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9ab73fd4ddacc0c1524f8d742c7dcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d74bc0e4660fd4670077fc7690a7252.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e056089ae36a2892cdc776c89d649294.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/206890afe387969cbbc45cfc639fcbe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/de1b8752-f357-4381-9c25-9a1175d421d3.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002cc6a0373255f39172cdee62fb6b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ce50ba5e349425274f05d46d120a74.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2023-04-20更新
|
628次组卷
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3卷引用:广西南宁市2023届高三二模数学(文)试题