1 . 如图,在直三棱柱
中,
,
,G是棱
的中点.
(1)证明:
平面
;
(2)若
,求三棱锥
体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeed487430a5b8a330f2d0c52166521a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/2/173b03c9-463c-4834-9c84-3d8691bb48d1.png?resizew=166)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4560fa4ad459b58b723c74bd24e51ebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489883fe8df8ef29f9f3fc123261449e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a3577b5b2a09a05faacaa49442d5d7.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,已知多面体
的底面
是边长为
的菱形,
,
底面
,
,
是
的中点,且
.
![](https://img.xkw.com/dksih/QBM/2023/4/13/3215666681225216/3216428152422400/STEM/e00317572d754f8091c6cbb77c65353e.png?resizew=158)
(1)求证
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb6741e28fa858ec7b858adf4cfebe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147e7c8ba0bbb540a712f6eb2ed6d22e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3768f6a03f319d864accca20e25c5bd8.png)
![](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/3cecdb97f6941459823be7aabccf5fa8.png)
![](https://img.xkw.com/dksih/QBM/2023/4/13/3215666681225216/3216428152422400/STEM/e00317572d754f8091c6cbb77c65353e.png?resizew=158)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660f1957af9e41714cef8a14ba18e8ff.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3346234091eee0cb6b18673e8e3f55fe.png)
您最近一年使用:0次
2023-04-14更新
|
771次组卷
|
6卷引用:黑龙江省大庆实验中学实验二部2022届高考得分训练(二)文科数学试卷
黑龙江省大庆实验中学实验二部2022届高考得分训练(二)文科数学试卷河南省郑州市2022届高三第二次质量预测数学(文科)试题(已下线)必刷卷01(文)-2022年高考数学考前信息必刷卷(全国乙卷)(已下线)8.6 空间直线、平面的垂直(分层练习)-2022-2023学年高一数学同步精品课堂(人教A版2019必修第二册)(已下线)立体几何专题:空间几何体体积的5种题型(已下线)第一章 点线面位置关系 专题二 空间垂直关系的判定与证明 微点1 空间直线垂直的判定与证明【基础版】
3 . 如图,已知矩形
所在平面垂直于直角梯形
所在平面,
,
分别是
的中点.
(1)设过三点
的平面为
,求证:平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73153657848013d2a1c3247d7f84ddeb.png)
平面
;
(2)求四棱锥
与三棱锥
的体积之比.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1195c8aeabf1925d6980b8de505e4050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d89a7eaa8e282efd9406ee958e061c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a68b3bc11c7d20ac7ba374ac8688c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e5680d463aa0e74316ec3db2359397.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/1/3c1772ed-5c2d-485f-af22-4af68994adfb.png?resizew=179)
(1)设过三点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49a6818ec36e9f6bee7484f57fc48b8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73153657848013d2a1c3247d7f84ddeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cccb45ff54d47fdb2dee78673e38ba9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
您最近一年使用:0次
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解题方法
4 . 如图,三棱柱ABC﹣A1B1C1中,AA1⊥平面ABC,D、E分别为A1B1、AA1的中点,点F在棱AB上,且AF=
AB.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/25/5fdfa695-72de-44de-9f1a-f1b6dca36bb9.png?resizew=158)
(1)求证:EF∥平面BDC1;
(2)在棱AC上是否存在一个点G,使得平面EFG将三棱柱分割成的两部分体积之比为1:15,若存在,指出点G的位置;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/25/5fdfa695-72de-44de-9f1a-f1b6dca36bb9.png?resizew=158)
(1)求证:EF∥平面BDC1;
(2)在棱AC上是否存在一个点G,使得平面EFG将三棱柱分割成的两部分体积之比为1:15,若存在,指出点G的位置;若不存在,说明理由.
您最近一年使用:0次
2023-01-06更新
|
762次组卷
|
8卷引用:黑龙江省哈尔滨市第六中学校2022-2023学年高一下学期期中数学试题
黑龙江省哈尔滨市第六中学校2022-2023学年高一下学期期中数学试题2016届安徽省淮南市高三下学期二模文科数学试卷2016-2017学年湖北襄阳五中高二上学期开学考数学文试卷辽宁省沈阳市东北育才学校2014-2015学年高一上学期第二次段考数学试题(已下线)8.5 空间直线、平面的平行(精练)-2022-2023学年高一数学一隅三反系列(人教A版2019必修第二册)(已下线)立体几何专题:空间几何体体积的5种题型(已下线)专题08 空间直线与平面的平行问题(2) - 期中期末考点大串讲广东省广雅中学花都校区2022-2023学年高一下学期期中数学试题
名校
解题方法
5 . 如图,四边形
为长方形,
平面
,
,点
分别为
的中点,设平面
平面
.
平面
;
(2)证明:
;
(3)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fa40b64a2b8a9132514462e9866cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2682f3f3f0f72c893b99073bcac83ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b0c740eebf258deb085e0584bdd6820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ef2fdd876078e4070a8040e1345c60f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f44f2b2f82a9126223138972850aa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb31601464364be2baf4aa87404bcd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75796c706c694269bff36f1c2fda41de.png)
(3)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea56f8a50404ac066bc2099bc58ff58.png)
您最近一年使用:0次
2023-08-12更新
|
1313次组卷
|
6卷引用:黑龙江省大庆外国语学校2023-2024学年高二上学期开学质量检测数学试题
黑龙江省大庆外国语学校2023-2024学年高二上学期开学质量检测数学试题新疆生产建设兵团第三师图木舒克市第一中学2022-2023学年高一下学期4月月考数学试题石家庄二中实验学校2022-2023学年高二下学期假期学情监测数学试题广东省珠海市斗门区第一中学2023-2024学年高二上学期开学考试数学试题(已下线)专题训练:线线、线面、面面平行与垂直证明大题-同步题型分类归纳讲与练(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)
名校
解题方法
6 . 如图,四棱锥
中,底面为矩形,
平面
,
为
中点,
为
中点,
为
中点,
.
(1)证明:平面
平面
;
(2)求点
到面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/945f225b936fbbd9edd393343702ff0e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/3/7a6eefac-8ede-43b4-ab63-7a62e575a6c1.png?resizew=173)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7253734a35143793f2aa29f5313180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
名校
解题方法
7 . 如图,四棱锥
中,底面ABCD为矩形,
平面ABCD,E为PD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/6/8d6a07f3-6bad-4094-9111-6d1fccf1d182.png?resizew=196)
(1)证明:
//平面AEC
(2)设三棱锥
的体积是
,
,求平面DAE与AEC的夹角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/6/8d6a07f3-6bad-4094-9111-6d1fccf1d182.png?resizew=196)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)设三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b565e518d475a50358fedff2f0bb8dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ec13ca7115ccd73a9d793758f1c170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1412048bf1422752f89049f5521095a8.png)
您最近一年使用:0次
2023-08-05更新
|
1483次组卷
|
5卷引用:黑龙江省哈尔滨市南岗区哈尔滨市第七十三中学校2023届高三上学期期中数学试题
8 . 如图,PCBM是直角梯形,
,
,
,
,又
,
,
,且直线AM与直线PC所成的角为60°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/7570a4f4-1491-4131-8a14-b1c240b1e7d3.png?resizew=244)
(1)求证:平面PAC⊥平面ABC;
(2)求异面直线PA与MB所成角的余弦值;
(3)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8432a44f6c6b37f4961dc63521fa7f9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3624d307a5482ff913eb8d608d827077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dca0fddd44a2a325754baf9452fe90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1be17e0a3e51cde1f50f384198e71e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa8c14100a4f847b41b9148954116c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/7570a4f4-1491-4131-8a14-b1c240b1e7d3.png?resizew=244)
(1)求证:平面PAC⊥平面ABC;
(2)求异面直线PA与MB所成角的余弦值;
(3)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/142ea3931dc45cfe66b66ef17d3cefcd.png)
您最近一年使用:0次
解题方法
9 . 如图,在直四棱柱
中,底面
是平行四边形,
,
,M为
的中点.
(1)证明:
∥平面
;
(2)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/fbeb1554fc1cec56b983a08e9dc52c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571821f5f2d335a4293ef6eed97cbd12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/29/b181616b-160b-4943-b881-25621ebc7874.png?resizew=171)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af29254fe60a392c249c5791279e9c8.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041434f0c90fb3cdd685b8eb1c2b4b26.png)
您最近一年使用:0次
名校
解题方法
10 . 如图所示,正三棱柱
,
,
,
分别为
,
的中点.
(1)证明:
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/6f41d364b55d88688cd1f571ed231228.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/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/13/4a279866-b1fe-4150-b9f8-7012f17af1ed.png?resizew=136)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2ac20af67f3e0891be3102d70557ba.png)
您最近一年使用:0次
2023-06-08更新
|
887次组卷
|
2卷引用:黑龙江省哈尔滨市双城区兆麟中学2022-2023学年高一下学期期中数学试题