名校
解题方法
1 . 如图,在棱长为2的正方体
中,P,Q分别是棱
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/adfe99d3-5f97-4225-b6bc-09af8ec54f10.png?resizew=147)
(1)若
为棱
上靠近
点的四等分点,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
平面PQC;
(2)若平面PQC与直线
交于
点,求平面PRQC将正方体分割成的上、下两部分的体积之比.(不必说明画法与理由).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/adfe99d3-5f97-4225-b6bc-09af8ec54f10.png?resizew=147)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
(2)若平面PQC与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
您最近一年使用:0次
2023高一·全国·专题练习
解题方法
2 . 如图,四棱锥
,
,
,
,平面
平面
,平面
平面
.若点
为线段
中点,求证:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ea4bd288944d3ba3d6a319de869dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1b292baa30ffc34df3a47d57b60c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/677d1863ff4d8ac1604b18149d4f320f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca0832e094d5c05ec13c38ae556b3f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c0566d4ccf791d639c7823398941d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828cd6ec91191ba72e0eb6bb84aab88b.png)
您最近一年使用:0次
2023-04-02更新
|
649次组卷
|
6卷引用:第27讲 线面平行面面平行性质定理的应用2种题型
(已下线)第27讲 线面平行面面平行性质定理的应用2种题型(已下线)8.5.3 平面与平面平行(精练)-【题型分类归纳】2022-2023学年高一数学同步讲与练(人教A版2019必修第二册)(已下线)13.2.4 平面与平面的位置关系(已下线)第一章 点线面位置关系 专题一 空间平行关系的判定与证明 微点2 空间直线平行的判定与证明综合训练【基础版】(已下线)专题19 平面与平面平行-《重难点题型·高分突破》(人教A版2019必修第二册)(已下线)8.5.3 平面与平面平行【第二练】“上好三节课,做好三套题“高中数学素养晋级之路
解题方法
3 . 已知平面
平面
,直线
平面
,且点
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a60be170a52db82cf37b30db0cde26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23976db53f05b3d5d791c4d736a7184d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0b6de90bb936cdb09629123100145d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a30262f17d1e521b48d773da22ebf452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1754786a3367aca3da18ee3316e5b968.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,在多面体
中,已知
是正方形,
,
平面
分别是
的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/11/541ad583-96cf-4576-a8d1-6c559c0c5e22.png?resizew=156)
(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/d20e38a1b5cfffd43a3405481a1d67cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d63f76636849706b8728b2181c3454cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67621a2ba5d5dc7e9f7866b0e748efc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88d863bbe0a300e8c2f464574c4f5e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfe254b55db25eaae330bbb33b0a48c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db3b70cd3a7b12306eb4fe39a208b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9741e43512323d96f36317543793ddf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/11/541ad583-96cf-4576-a8d1-6c559c0c5e22.png?resizew=156)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73153657848013d2a1c3247d7f84ddeb.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
您最近一年使用:0次
2023-05-09更新
|
1121次组卷
|
3卷引用:四川省成都市2023届高三三诊理科数学试题
名校
解题方法
5 . 如图,平行六面体
中,点P在对角线
上,
,平面
平面
.
三点共线;
(2)若四边形
是边长为2的菱形,
,
,求二面角
大小的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23f01af749100e1888bba06268843db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f2ff4c165222af48ba96a6014276b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b70c74a0f397e6e3e6d6f25429360a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d294d69caac577339f11f477b2047e.png)
您最近一年使用:0次
2023-04-16更新
|
3139次组卷
|
5卷引用:安徽省安庆市示范高中2023届高三下学期4月联考数学试卷
名校
解题方法
6 . 如图,在三棱柱
中,四边形
是边长为4的菱形.
,点D为棱AC上动点(不与A,C重合),平面B1BD与棱A1C1交于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/3/af455afc-a8e2-49fe-b308-3fe888b315d0.png?resizew=168)
(1)求证:
;
(2)若
,平面ABC⊥平面
,
,求直线BC与平面B1BDE所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae617fbbfc82b69086f5184bd5cbca26.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/3/af455afc-a8e2-49fe-b308-3fe888b315d0.png?resizew=168)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a2f55320edad0d0e73df2877a38538.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b67bd44e1d9d2739714f0b9cf3bc046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70d708336d4f15e7fca0b26acb353b2.png)
您最近一年使用:0次
2023-05-02更新
|
826次组卷
|
3卷引用:陕西省西安市长安区第一中学2023届高三二模数学试题
解题方法
7 . 如图,多面体ABCGDEF中,AB,AC,AD两两垂直,平面
平面DEFG,平面
平面ADGC,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/bbb9e6de-73ff-4ee5-a1bc-3531cc25c86a.png?resizew=186)
(1)证明:四边形ABED是正方形;
(2)判断点B,C,F,G是否共面,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6616412b3cc317e34457d5e02908412a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc072594092b2386421d2a5140030cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb3af98521e28bf0f17617572953c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd6ae694a4678178afc4439cc7608f2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/bbb9e6de-73ff-4ee5-a1bc-3531cc25c86a.png?resizew=186)
(1)证明:四边形ABED是正方形;
(2)判断点B,C,F,G是否共面,并说明理由.
您最近一年使用:0次
2023高一下·全国·专题练习
解题方法
8 . 如图,
平面
,
平面
,
,
,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8ccd4181f956f6e0140bf0ab8f0716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e952f7b05d06917128bfecb64fe3cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88dac2c17c765517c2163ab43bbe1038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
您最近一年使用:0次
2023-03-17更新
|
635次组卷
|
5卷引用:8.5.3 平面与平面平行 (精讲)(1)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)
(已下线)8.5.3 平面与平面平行 (精讲)(1)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)8.5.3 平面与平面平行(精练)-【题型分类归纳】2022-2023学年高一数学同步讲与练(人教A版2019必修第二册)(已下线)第一章 点线面位置关系 专题一 空间平行关系的判定与证明 微点2 空间直线平行的判定与证明综合训练【基础版】(已下线)8.5.3 平面与平面平行-同步精品课堂(人教A版2019必修第二册)(已下线)第六章立体几何初步章末二十种常考题型归类(2)-【帮课堂】(北师大版2019必修第二册)
2023高一·全国·专题练习
解题方法
9 . 如图,正三棱柱
中,过
的截面与上底面交于
,且点
在棱
上,点
在棱
上.证明:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedf343529e631edbd092670bb2b37d7.png)
您最近一年使用:0次
2023-04-02更新
|
913次组卷
|
6卷引用:第27讲 线面平行面面平行性质定理的应用2种题型
(已下线)第27讲 线面平行面面平行性质定理的应用2种题型(已下线)8.5.3 平面与平面平行(精练)-【题型分类归纳】2022-2023学年高一数学同步讲与练(人教A版2019必修第二册)(已下线)13.2.4 平面与平面的位置关系(已下线)第一章 点线面位置关系 专题一 空间平行关系的判定与证明 微点2 空间直线平行的判定与证明综合训练【基础版】(已下线)8.5.3 平面与平面平行-同步题型分类归纳讲与练(人教A版2019必修第二册)(已下线)11.3.3平面与平面平行-同步精品课堂(人教B版2019必修第四册)
解题方法
10 . 如图,在四棱锥
中,底面
为菱形,
为正三角形,平面
平面
,
.
(1)证明:
;
(2)若
为线段
上靠近
的三等分点,且
平面
,平面
平面
,
平面
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a5faf3cbb633fc4294c8ce703c64c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5a738491886eb76ebd90c53ebbcd86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a58a622e2b1a239f2f96aa1501e9799.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/15/f8c2446f-eaa8-401a-b389-84a8de59cc40.png?resizew=184)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21be01a95cdd3149512bf95d6084fdd6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf6295af1afb3c0731e2ce87cbcb7bc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414844edd458857bdfc80bffa61cbf9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3201d3796ed9a29338aac25245a7c8e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d2b11dfa3dbd931b7d9e2db681a61ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383e94a19ed6fca60a49d5db2328e6b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c0bca634f6a08632ea07ed43c336ee.png)
您最近一年使用:0次