解题方法
1 . 如图,四棱锥
中,底面
是边长为2的正方形,
平面
,且
,
为
上的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/24/72bbb20b-6def-4728-98b8-d4addc9a6fa0.png?resizew=127)
(1)求证:
;
(2)若
为
中点,求三棱锥
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/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/24/72bbb20b-6def-4728-98b8-d4addc9a6fa0.png?resizew=127)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4611ceb2a28f7a7e4d24266d7f99b22.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4a79fe6289d42058b781171fbd0b92e.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,四棱锥
中,底面
为平行四边形.
,
,
,
底面
.
![](https://img.xkw.com/dksih/QBM/2022/12/8/3126685421641728/3127424343736320/STEM/8c22e4b5422e4a37ac176684ccddeb49.png?resizew=212)
(1)证明:
平面
;
(2)求三棱锥
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/b624742fe28db114e0554c6c87bff05c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9ad150cb1e4cd8977d4cc3d99be17c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2022/12/8/3126685421641728/3127424343736320/STEM/8c22e4b5422e4a37ac176684ccddeb49.png?resizew=212)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b172e3aae625013716b30fae2c59279.png)
您最近一年使用:0次
20-21高一下·浙江·期末
名校
解题方法
3 . 如图,在正三棱柱
中,
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/788305ce-a88f-40cf-835e-8494e9559ed2.png?resizew=154)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
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/06ff137a836d4f2c896dd0ca668396e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4543cc8a26ef0642e6e094b737597051.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/788305ce-a88f-40cf-835e-8494e9559ed2.png?resizew=154)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb66e4fa5ca4231b8ce2490eeb192b.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761b4d173f79916d180f3a17ef745d2d.png)
您最近一年使用:0次
2022-12-09更新
|
830次组卷
|
6卷引用:陕西省渭南市华阴市2022届高三上学期摸底考试文科数学试题
陕西省渭南市华阴市2022届高三上学期摸底考试文科数学试题(已下线)【新东方】高中数学20210527-018【2021】【高一下】(已下线)期末测试卷01-2020-2021学年高一数学下学期期末专项复习(北师大版2019必修第二册)浙江省杭州市高级中学2020-2021学年高一下学期期中数学试题(已下线)模块十一 立体几何-1江西省上高二中2022-2023学年高一下学期期末数学复习卷试题
名校
解题方法
4 . 如图,已知正方体
的棱长为1,
与
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/d695a3e0-2999-426e-8033-8824cc6e9a47.png?resizew=175)
(1)求证:
平面
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/d695a3e0-2999-426e-8033-8824cc6e9a47.png?resizew=175)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c401f9dd333b36433b56d7aef1ffc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd1041bb4d3bc7a3a74860c44320d07.png)
您最近一年使用:0次
2022-12-09更新
|
180次组卷
|
2卷引用:陕西省榆林市神木中学2021-2022学年高一上学期第三次检测数学试题
解题方法
5 . 如图所示,在四棱锥P—ABCD中,底面ABCD是边长为4的正方形,
,AD⊥平面PAB,点F,G分别是线段BC,CD的中点
![](https://img.xkw.com/dksih/QBM/2022/7/21/3027196525887488/3029536116391936/STEM/e03b6768f5604d6eaff7d5f2102602ec.png?resizew=240)
(1)证明:PA⊥平面ABCD;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e05b6d03d24f932d6df32afe14aa79.png)
![](https://img.xkw.com/dksih/QBM/2022/7/21/3027196525887488/3029536116391936/STEM/e03b6768f5604d6eaff7d5f2102602ec.png?resizew=240)
(1)证明:PA⊥平面ABCD;
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69ca2a6452530eb88899803f94b75540.png)
您最近一年使用:0次
6 . 如图所示,在四棱锥
中,
,且
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/d8ace720-170b-4ee4-888f-daad2bdb0d07.png?resizew=158)
(1)证明:平面
平面
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/779f2410a90a51b78d129f7dfd341119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/d8ace720-170b-4ee4-888f-daad2bdb0d07.png?resizew=158)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
名校
解题方法
7 . 如图,在三棱柱
中,侧面
是矩形,侧面
是菱形,
是
的中点,
是
与
的交点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/859bf945-2f21-4891-a82f-6e5c5b326bdf.png?resizew=189)
(1)求证:
平面
;
(2)若
,
是边长为4的正三角形,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429228f882da65a8e0064c88d02b8e40.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/859bf945-2f21-4891-a82f-6e5c5b326bdf.png?resizew=189)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98474425eb86a28f2b01cec95643ae7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcfc6016de043e3885dd8c28d62f219.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,在棱长为2的正方体
中,点
分别为棱
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/a0af8248-4166-47ab-8537-e33909d5af55.png?resizew=159)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e54ad0870e36726547ee79f6e093be.png)
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/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/a0af8248-4166-47ab-8537-e33909d5af55.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e54ad0870e36726547ee79f6e093be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9036c32f4cf9f2ab0c79516b455bafe5.png)
您最近一年使用:0次
2022-12-06更新
|
297次组卷
|
3卷引用:陕西省咸阳市实验中学2021-2022学年高一上学期第三次月考数学试题
名校
解题方法
9 . 如图,在三棱柱
中,
平面ABC,
,D是BC的中点,O是
与
的交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/7629d9da-36d7-4b1f-a7cd-16ebd795fcd7.png?resizew=150)
(1)证明:
平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0305c1a5536c50e88e931ba723d3e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/7629d9da-36d7-4b1f-a7cd-16ebd795fcd7.png?resizew=150)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896e293411e2fd0da215ff20781cb36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41104641f3e2260d00aeadf8fb8a078a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51bf5b9fa4c861b5049c3d8ff9efb990.png)
您最近一年使用:0次
2022-07-14更新
|
1207次组卷
|
5卷引用:陕西省汉中市六校联考2021-2022学年高一下学期期末数学试题
陕西省汉中市六校联考2021-2022学年高一下学期期末数学试题吉林省长春市十一高中2021-2022学年高一下学期第二学程考试数学试题黑龙江哈尔滨工业大学附属中学校2021-2022学年高一下学期期末数学试题(已下线)空间直线、平面的平行(已下线)模块四 专题2 期末重组综合练(陕西)
解题方法
10 . 如图,在正方体
中,E为
的中点,O为AC与BD的交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/70ba1487-cfa0-4a74-8180-e87407fd5004.png?resizew=211)
(1)求证:
平面AEC;
(2)若正方体
的棱长为2,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/70ba1487-cfa0-4a74-8180-e87407fd5004.png?resizew=211)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923d409630f5331cf8e85fb6c584e31b.png)
(2)若正方体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0625187f35c80fb49277693e6b41b021.png)
您最近一年使用:0次