解题方法
1 . 如图所示,已知四边形
是正方形,四边形
是矩形,
,
,
是线段
的中点.求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0cee0f36dc452e58086832c0152b641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f33fa5152ba27f7b8a28890cefca219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/e2ab3960-d7e8-42dd-b4c9-86f8116538b7.png?resizew=204)
您最近一年使用:0次
解题方法
2 . 如图,在多面体
中,四边形
是菱形,四边形
与四边形
均为矩形,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/bd940c4f-9ff9-4736-8f41-adcbfb37e9a4.png?resizew=137)
(1)求证:
平面
;
(2)求证:
//平面
![](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/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b54387f870ae37f7951b253665d64f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dfd4c4648dc52d0952c20f3978fadd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/bd940c4f-9ff9-4736-8f41-adcbfb37e9a4.png?resizew=137)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c5ae16a7145a28a91d45ef950a07c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3f778aa946fd3136aefac7f03f7cd20.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4242baccd4ae575a7dfa7929684cdc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
您最近一年使用:0次
名校
3 . 已知多面体
中,
为矩形,
平面
,
,且
,
,
,点
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/af8763e6-ac5f-4a12-bc36-6b9576fa41f9.png?resizew=159)
(1)求证:
平面
;
(2)求二面角
的平面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2fc1129846f37afdafd751627c450d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed04b01505bbd8a4ac0bc12e46f23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ccbe7b7e304f13142684268baa477d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7be724cff092529ea0759a9bee9555a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5bbe1abbe2d935aa1a2fd91bd5b5019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/af8763e6-ac5f-4a12-bc36-6b9576fa41f9.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e2fef2c0e49ecae8688ca60802310e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9efe66d99f813c6b1387392186822bb.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19fa7ff056747ebdc342dc2ddf1b4b16.png)
您最近一年使用:0次
解题方法
4 . 如图,四棱锥
中,
,
,
,,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/c730766b-ff47-4650-a1da-280bba4b19ec.png?resizew=169)
(1)求证:
;
(2)求证:
平面
;
(3)求直线
与平面
所成的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b44f4120c94cb7176dc31fcac387b32e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0facf189b2a3153beb7b9e077d3b1146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c4f1f769680754aec59e0f625f1550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639bec6242a4b3f7bfb4b7033a67328c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26aa7e15e3bc7ce76429ff9fd2dd9c7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/c730766b-ff47-4650-a1da-280bba4b19ec.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb05b8b630052ff544249ebd72d95d.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e589e2dff283a5fed007500bc834272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
解题方法
5 . 如图,在四面体
中,
,
,
分别是棱
的中点,则下列结论中不一定成立的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/03fecf99-d32d-498e-9030-058e8fa2fbd3.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c383691e8d740830a865b12d66f7633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927456b0989846a2f1573844bbaa2105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e661d825b7a6061e4d26fe5c53df73.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/03fecf99-d32d-498e-9030-058e8fa2fbd3.png?resizew=161)
A.![]() ![]() | B.![]() ![]() |
C.平面![]() ![]() | D.平面![]() ![]() |
您最近一年使用:0次
2020-02-13更新
|
534次组卷
|
3卷引用:人教A版(2019) 必修第二册 过关斩将 第八章 8.6 空间直线、平面的垂直 8.6.3 平面与平面垂直
6 . 已知四棱锥
中,底面
为矩形,平面
平面
,
,点
,
分别是
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/2a4e0cf8-cf1c-44dc-9aaa-f83d5391422c.png?resizew=158)
(1)求证:
平面
;
(2)若
与平面
所成角的正弦值等于
,求
的长.
![](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/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/931bbffda5e872703c9947eccc47ede2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/2a4e0cf8-cf1c-44dc-9aaa-f83d5391422c.png?resizew=158)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c34b18525831f3eda7bb90be0199b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee72fd8a5a52d08a4fddcf0830a8e103.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa42621cd6793e7f3673fdb49bc3123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2020-02-01更新
|
1813次组卷
|
2卷引用:2020届浙江省绍兴市诸暨市高三上学期期末数学试题
7 . 如图,在三棱柱
中,侧棱
底面
,底面
是正三角形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40bfd0a1577203a09814b25bcdb59941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d178e36807ed1266d300dc850a957aa.png)
![](https://img.xkw.com/dksih/QBM/2020/1/9/2373269142536192/2373984737361920/STEM/dec05d8a327144b09a2d97334e6b6ad4.png?resizew=180)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6eca7a916f82bdbc5444e92e84aaa6c.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/40bfd0a1577203a09814b25bcdb59941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d178e36807ed1266d300dc850a957aa.png)
![](https://img.xkw.com/dksih/QBM/2020/1/9/2373269142536192/2373984737361920/STEM/dec05d8a327144b09a2d97334e6b6ad4.png?resizew=180)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d560542b646924eaf577480ac73281b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
您最近一年使用:0次
2020-01-10更新
|
717次组卷
|
2卷引用:河北省邯郸市2019-2020学年高三上学期期末考试数学(理)试题
8 . 如图,四边形
是边长为1的正方形,
平面
,
平面
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/b1abe5f7-1d8b-4eac-b127-c9d03dc8519c.jpg?resizew=188)
(1)求证:
平面
;
(2)求该几何体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb92a5e7dc942c44d0f6d7f3906ff804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c611de332ba0c529d633a6cfe5240d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5254a8bb97154dc16c9435ef00ff5818.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/b1abe5f7-1d8b-4eac-b127-c9d03dc8519c.jpg?resizew=188)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d447ce2833cac5260ed5532283fa3997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8a20c1fc8a5620db5db3a74eb01201.png)
(2)求该几何体的体积.
您最近一年使用:0次
2020-01-06更新
|
311次组卷
|
2卷引用:安徽省芜湖市城南实验中学2019-2020学年高二上学期期中考试数学(理)试卷
2020高二·浙江·专题练习
9 . 若直线
直线
,直线
平面
,则
与
的位置关系是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df0f8712eed21d01eb1f91cb0af85f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d29acfee233f0903449ca2da4960b05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.![]() | B.![]() | C.![]() ![]() | D.以上答案都不对 |
您最近一年使用:0次