解题方法
1 . 如图,四棱锥
的底面是等腰梯形,
,
,
,
底面ABCD,
为棱
上的一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/10/3aa8e42e-1c7c-46fd-a62c-6fae5de08fb8.png?resizew=140)
(1)证明:
;
(2)若三棱锥
的体积为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa9254b9703c6d3935ef8b3b8e36b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9641d01140939c44450bf39773272af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1d3eeb763e27daae71af50e22bfdb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/10/3aa8e42e-1c7c-46fd-a62c-6fae5de08fb8.png?resizew=140)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f304789d5bcf31d9998fd4d920cd157.png)
(2)若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb86af236d321306d980046a377d0d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d7abf02717d6e59d8a64a65a87c412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a386b370ffb5739049b3391112b5d2.png)
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2卷引用:青海省海东市2023届高三第三次联考数学(文科)试题
2 . 如图,在直三棱柱
中,
是等边三角形,
,
是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/d07a6973-c647-4649-939d-3f6aea373694.png?resizew=153)
(1)证明:平面
平面
.
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f41d364b55d88688cd1f571ed231228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/d07a6973-c647-4649-939d-3f6aea373694.png?resizew=153)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f3c1b59a81027f370cb0f205892e76e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
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6卷引用:青海省海东市2022-2023学年高三上学期12月第一次模拟数学(文)试题
青海省海东市2022-2023学年高三上学期12月第一次模拟数学(文)试题四川省2023届高三高考专家联测卷(三)文科数学试题(已下线)8.6.3平面与平面垂直(第2课时平面与平面垂直的性质定理)(精讲)-【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)广西柳州市鹿寨县鹿鸣中学2022-2023学年高二上学期期末考试模拟(一)卷数学试题(已下线)8.6.3 平面与平面垂直(2)-2022-2023学年高一数学《考点·题型·技巧》精讲与精练高分突破系列(人教A版2019必修第二册)甘肃省定西市临洮县2024届高三下学期开学假期学习质量检测数学试题
3 . 如图,在三棱柱
中,
,
.
![](https://img.xkw.com/dksih/QBM/2022/6/20/3005515608031232/3007421490274304/STEM/460b1813006a40b892ed197776819035.png?resizew=253)
(1)证明:平面
平面
.
(2)设P是棱
上一点,且
,求三棱锥
体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd31113c6f65e8b5ce30935f50df64c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29e8a1eefb6776168969a1155c9e9c5.png)
![](https://img.xkw.com/dksih/QBM/2022/6/20/3005515608031232/3007421490274304/STEM/460b1813006a40b892ed197776819035.png?resizew=253)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
(2)设P是棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3ed8c86401d4cce99cb51c3a25478c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b31232447a0b0b3e45a0e111c60e7f0.png)
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8卷引用:青海省海东市第一中学2022届高考模拟(一)数学(文)试题
青海省海东市第一中学2022届高考模拟(一)数学(文)试题贵州省黔东南苗族侗族自治州2021-2022学年高一下学期期末考试数学试题(已下线)专题28 空间几何体的结构特征、表面积与体积-3(已下线)7.2 空间几何中的垂直(精练)(已下线)专题31 直线、平面垂直的判定与性质-2(已下线)专题3 空间几何体的体积运算(提升版)(已下线)上海市静安区2023届高三二模数学试题变式题16-21广东省佛山市实验中学2024届高三上学期第五次月考数学试题
4 . 如图,在四棱锥
中,底面ABCD是平行四边形,
,
,
,
,M为BC的中点,
,
.
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899348862803968/2901325183909888/STEM/408b8c488519489e90f5951af8993eb0.png?resizew=165)
(1)证明:
;
(2)求点M到平面PAD的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb28f1ebbdcd6c304d8a8d0ea28aae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f9425630dcfe5a824c44904d4f71e13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b0849016506bbcf052981f9cf25ab06.png)
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899348862803968/2901325183909888/STEM/408b8c488519489e90f5951af8993eb0.png?resizew=165)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b503c5da1208576c9fabd3685153c9d2.png)
(2)求点M到平面PAD的距离.
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2卷引用:青海省海东市2022届高考一模数学(文)试题
名校
解题方法
5 . 在四棱锥
中,底面
是直角梯形,
,
,
,
分别是棱
,
的中点.
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899231840321536/2902340650344448/STEM/e33bb52e-b185-4986-8bd7-1801e37e071c.png?resizew=215)
(1)证明:
平面
;
(2)若
,且四棱锥
的体积是6,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/d730ae4307db56b47849c3a19dedfb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899231840321536/2902340650344448/STEM/e33bb52e-b185-4986-8bd7-1801e37e071c.png?resizew=215)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e84094aedc798143d465276916c1b9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f09d555c9022f7546fe4a678b599376.png)
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7卷引用:青海省海东市2021-2022学年高二上学期期末数学文科试题
解题方法
6 . 如图,已知直三棱柱
,
,
分别是棱
,
的中点.
![](https://img.xkw.com/dksih/QBM/2020/6/24/2491720533016576/2493117771653120/STEM/18e36616-6895-49fb-9122-30ed0dea9323.png?resizew=268)
(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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2020/6/24/2491720533016576/2493117771653120/STEM/18e36616-6895-49fb-9122-30ed0dea9323.png?resizew=268)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f70cf3f6c7acbf60d4a4ca0ce89619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43cbc92b5f5c26c7f70b52b27616a81.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039d015ead0b14116df711bd2240d0e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d890ffc5d1efcde3305aa032dec3b1b.png)
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2020-06-26更新
|
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4卷引用:青海省海东市2020届高三第四次模拟考试数学(文)试题