1 . 如图,在三棱柱
中,
平面ABC.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/f395e6a4-93a0-4bea-a106-ca8f070642ff.png?resizew=122)
(1)证明:平面
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求三棱锥
的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb7d2894745ccb63541018f09f9236b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/f395e6a4-93a0-4bea-a106-ca8f070642ff.png?resizew=122)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df00cdf77ed39ca5a0b305861a693142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcfc6016de043e3885dd8c28d62f219.png)
您最近一年使用:0次
解题方法
2 . 如图,在三棱锥
中,
,
,O为
的中点.
![](https://img.xkw.com/dksih/QBM/2020/2/24/2405974316130304/2407852514099200/STEM/0099fc79-bf3e-4e3f-bb10-671dde0ce950.png)
(1)证明:
;
(2)若点M在线段
上,且
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4957406b21df59fdf7fa184752287b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c0335337b78973a170b8f3dbe44525.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2020/2/24/2405974316130304/2407852514099200/STEM/0099fc79-bf3e-4e3f-bb10-671dde0ce950.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f2a2c03829634cec6d4d431159c6f27.png)
(2)若点M在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a89b4c70609446864ed68bba46e4146d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a8d567b33325863ceacdabcb4894e7.png)
您最近一年使用:0次
2020-02-27更新
|
198次组卷
|
3卷引用:2020届广西壮族自治区钦州市第三中学高三下学期3月月考数学(文)试题
名校
解题方法
3 . 如图,在四棱锥
中,
,
,
,
,
分别为
的中点,
.
![](https://img.xkw.com/dksih/QBM/2020/2/16/2400372945534976/2401239919378432/STEM/14241bbd-e1d3-4009-b15b-93779d3d342a.png)
(1)求证:
平面
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8662205622d3b0c8dbfc543c64188f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65595a75b4d7f448c0424aa2169be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a078495ba47076ccaa28b46f765d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae57e90e373d68c5550a7e258bfbe22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29f52897bd8e15c93884d843555bd7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca433260b7cf14e30258592ce007fe2.png)
![](https://img.xkw.com/dksih/QBM/2020/2/16/2400372945534976/2401239919378432/STEM/14241bbd-e1d3-4009-b15b-93779d3d342a.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc26eda15abd72b7efe68af47639a5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8662205622d3b0c8dbfc543c64188f0.png)
您最近一年使用:0次
2020-02-17更新
|
1052次组卷
|
4卷引用:2020届广西河池市高三上学期期末考试数学(文)试题
名校
解题方法
4 . 如图,在棱长为
的正方体
中,
,
,
分别为棱
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/7d156a01-b32c-438d-ab0b-c18935e772a4.png?resizew=155)
(1)求证:
;
(2)求四面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/7d156a01-b32c-438d-ab0b-c18935e772a4.png?resizew=155)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf66593365cd8f1f7dad5471048471a4.png)
(2)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/496cbc4ce4e8914e25613c1e680a0455.png)
您最近一年使用:0次
2020-04-08更新
|
367次组卷
|
5卷引用:广西柳州高级中学2019-2020学年高三3月线上月考数学(文)试题
广西柳州高级中学2019-2020学年高三3月线上月考数学(文)试题2020届湖北省武汉市高三下学期3月质量检测数学(文)试题(已下线)专题04 立体几何-2020年高三数学(文)3-4月模拟试题汇编(已下线)文科数学-6月大数据精选模拟卷03(新课标Ⅲ卷)(满分冲刺篇)江西省安福中学2023届高三第一次质量检测数学(理)试题
名校
5 . 已知三棱锥P﹣ABC(如图一)的平面展开图(如图二)中,四边形ABCD为边长等于
的正方形,△ABE和△BCF均为正三角形,在三棱锥P﹣ABC中:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/54a2892f-7640-4bf6-b39d-9632b925dce3.png?resizew=336)
(1)证明:平面PAC⊥平面ABC;
(2)若点M在棱PA上运动,当直线BM与平面PAC所成的角最大时,求三棱锥M﹣ABC的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/54a2892f-7640-4bf6-b39d-9632b925dce3.png?resizew=336)
(1)证明:平面PAC⊥平面ABC;
(2)若点M在棱PA上运动,当直线BM与平面PAC所成的角最大时,求三棱锥M﹣ABC的体积.
您最近一年使用:0次
6 . 如图,四边形
为矩形,四边形
为梯形,
,
,且平面
平面
,
,点
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/8c249b94-fae2-4953-9b2a-f7028d50013f.png?resizew=246)
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b54686fd79c47078a4181d7cc3b87d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794d22207b4572ea2e93a260f2fe2baf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7488e291f1a10a2dceb8526ee4495522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/8c249b94-fae2-4953-9b2a-f7028d50013f.png?resizew=246)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1399e7ae0b2decaafc62a5cdffb15522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20af148464904e21f4374cc8fb886fba.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7677eda0e5caba5c99ca1d59c7c0c24.png)
您最近一年使用:0次
2019-10-13更新
|
385次组卷
|
7卷引用:2015届广西梧州、崇左两市联考高三上学期摸底文科数学试卷
7 . 如图所示,已知长方形
中,
,
为
的中点,将
沿
折起,使得
.
(1)求证:平面
平面
.
(2)是否存在满足
的点
,使得
,若存在,求出相应的实数
;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100af11e6cb83b56437f2db7dadeb9f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f9fba8a4098c1a0515286eb8d616dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/804c0e2a375b5f4ff1c420532968efc3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/b9a62c33-cf14-4d23-aed9-54ae66b3282c.png?resizew=337)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb5012f6c70a1e98d682b6d021fadd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0760712e3e2ea02b755b751e760d0c55.png)
(2)是否存在满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaac8d2b8d350312c425b4f0dc5b8cd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d457216a9e698bbd7920f2f65d4d38db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
名校
解题方法
8 . 如图所示,在四棱柱
中,侧棱
平面
,底面
是直角梯形,
,
,
.
(1)证明:
平面
;
(2)若四棱锥
的体积为
,求四棱柱
的侧面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.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/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8146229a98505930b9e59bea6a3651bf.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4890e58791814622b87c4d60ea971f54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679748eab882a6be0fefd2cc300349a4.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b54ed3e5c70f86a4f45fd67641b304d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5991e9ec7666f533a528a4173c58f0ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/2636d8f0-28db-440c-aae3-f4a651f3d631.png?resizew=180)
您最近一年使用:0次
2020-05-06更新
|
162次组卷
|
3卷引用:广西南宁市2019-2020学年高三毕业班第一次适应性测试数学(文)试题
9 . 在如图所示的几何体中,四边形ABCD是正方形,PA⊥平面ABCD,E,F分别是线段AD,PB的中点,PA=AB=1.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/de5327b4-43fc-43e9-83cb-de7fd7cadce8.png?resizew=139)
(1)证明:EF∥平面PDC;
(2)求点F到平面PDC的距离.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/de5327b4-43fc-43e9-83cb-de7fd7cadce8.png?resizew=139)
(1)证明:EF∥平面PDC;
(2)求点F到平面PDC的距离.
您最近一年使用:0次
2019-12-05更新
|
781次组卷
|
14卷引用:广西壮族自治区玉林市2019-2020学年高三上学期11月月考数学(文)试题
广西壮族自治区玉林市2019-2020学年高三上学期11月月考数学(文)试题广西玉林市第十一中学2022届高三9月月考数学(文)试题吉林省长春市普通高中2018届高三质量监测(三)数学(文)试题东北三省四市2018届高三高考第一次模拟考试数学(文)试题【全国校级联考】东北三省四市教研联合体2018届高三第二次模拟考试文科数学试题【校级联考】四川省眉山一中办学共同体2019届高三10月月考数学(文)试卷重庆市第一中学校2019届高三3月月考数学(文)试题【全国百强校】河北省唐山市第一中学2019届高三下学期冲刺(二)数学(文)试题(已下线)专题8.4 直线、平面平行的判定及其性质(讲)【文】-《2020年高考一轮复习讲练测》(已下线)专题8.4 直线、平面平行的判定及其性质(讲)-江苏版《2020年高考一轮复习讲练测》2020届湖南省长沙市长郡中学高三下学期4月第三次适应性考试数学(文)试题江西省上高二中2021届高三上学期第四次月考数学(文)试题(已下线)【新东方】杭州新东方高中数学试卷332(已下线)第02讲 基本图形的位置关系(1)
10 . 如图所示,三棱柱
中,已知
侧面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/54fab5d2-6fe6-40d4-8f77-745aa7bb1624.png?resizew=164)
(1)求证:
平面
;
(2)
是棱
上的一点,若三棱锥
的体积为
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41fd676c41d2d644928f014b0fea4689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba9574b2a856772570046d87a6242be.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/54fab5d2-6fe6-40d4-8f77-745aa7bb1624.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231673dd67ab79d3c5da73904ceade1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f73a0ca4e6c794242489066fddb6c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5040d31e784398842b04ed7dd0aacc10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
您最近一年使用:0次
2019-12-07更新
|
148次组卷
|
4卷引用:广西柳州高级中学、南宁市第二中学2018届高三上学期第二次联考数学(文)试题1
广西柳州高级中学、南宁市第二中学2018届高三上学期第二次联考数学(文)试题1广西柳州高级中学、南宁市第二中学2018届高三上学期第二次联考数学(文)试题2(已下线)专题8.5 直线、平面垂直的判定及其性质(讲)【理】-《2020年高考一轮复习讲练测》2020届安徽省合肥市肥东县高级中学高三下学期4月调研考试数学(文)试题