如图,四棱锥
的底面为正方形,
底面
.设平面
与平面
的交线为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/27/06e48114-1566-4cc7-bac7-12964f660fb9.png?resizew=167)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
平面
;
(2)证明:
平面
;
(3)在图中画出直线
并证明:
平面
.
![](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/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/27/06e48114-1566-4cc7-bac7-12964f660fb9.png?resizew=167)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
(3)在图中画出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df740160690029ac1e730c85f20347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
22-23高二上·海南儋州·期末 查看更多[4]
海南省儋州市鑫源中学2022-2023学年高二上学期期末考试数学试题(已下线)模块三 专题8(立体几何初步)拔高能力练(北师大版)(已下线)模块三 专题7 大题分类练(立体几何初步)拔高能力练(人教A)(已下线)模块三 专题8大题分类练(立体几何初步)拔高能力练(苏教版)
更新时间:2023-02-23 10:51:50
|
相似题推荐
解答题-证明题
|
较易
(0.85)
解题方法
【推荐1】如图,在四棱锥
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37602d9cd4957b2b2908c64b466e65a4.png)
,
为棱
的中点,
平面
.
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9068f29d671d76d1e95ba3a4eaff5b96.png)
(2)求证:平面
平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37602d9cd4957b2b2908c64b466e65a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d41056df7af667755afade885de3eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/68fdb2b9d6a4a54ed1328c5b3adcf7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9068f29d671d76d1e95ba3a4eaff5b96.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
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解答题-证明题
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名校
解题方法
【推荐2】如图,正方体
中,
为
中点,
为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/168a39df-e18f-437a-a7ef-276c6f09a380.png?resizew=172)
(1)求证:
平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/168a39df-e18f-437a-a7ef-276c6f09a380.png?resizew=172)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8964550c7fc31d982b1534e884ad6f52.png)
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名校
【推荐1】在矩形
中,
,点P是线段
的中点,将
沿
折起到
位置(如图),使得平面
平面
,点Q是线段
的中点.
(1)证明:
平面
;
(2)求平面
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5181b97a7e43959b8455680157c3b644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dda72c058454c71f55aba95844a501dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561434718c09d44394f583928f27a429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2bdc60a42a1addaf772c18972e576fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/161a222f-f43d-4953-8209-1cac57f9ca3e.png?resizew=157)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a66d1d242f5317fcc90fee9a8e9fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f200cca4c2a438b59c592a7edb214e8.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f35614aff055b98b76ca262f64e629d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2246c0e92e8cc344f636ea8f8f9037e6.png)
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解答题-证明题
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【推荐2】如图,在三棱柱
中,
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/1/19/2897918421565440/2916492112740352/STEM/3f84e426-677f-4275-b3a0-d8f9536b828f.png?resizew=173)
(1)求证:
平面
;
(2)记
和
的交点为M,点N在线段
上,满足
平面
,求直线
与平面
所成角的正弦值.
![](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/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3be3dcde7b744f420a588cb8dd5b01.png)
![](https://img.xkw.com/dksih/QBM/2022/1/19/2897918421565440/2916492112740352/STEM/3f84e426-677f-4275-b3a0-d8f9536b828f.png?resizew=173)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231673dd67ab79d3c5da73904ceade1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b94e97d085cea077cb82a0b7d2f523e.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e53b212640dadf751ef7f65a78a209.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4c0fdc09d58a130e5b9155cde03ce8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
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【推荐3】如图,在平面四边形APBC中,
,
,
,
.将△PAB沿AB折起得到三棱锥
,使得
.
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978767381749760/2979488946167808/STEM/9f9f64d2-df03-4905-b14d-77fbbaf778f1.png?resizew=253)
(1)求证:
平面ABC;
(2)若点E在棱
上,
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd108abaf2b7fc1d0239b28afcf4ae6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a606499df4459e5fbd6021c61a805359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15b82151bff7cc0238d2034a6129f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec33fd6af9f2d43627d42061e5abbd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad34a693f8fae0c32f2b51d4a61b1de.png)
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978767381749760/2979488946167808/STEM/9f9f64d2-df03-4905-b14d-77fbbaf778f1.png?resizew=253)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f88842cdaf98f1603aa95f1a6fe1a16.png)
(2)若点E在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca15691dfea154b932004966f2fbca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b05faa9dc3d99b201de1af0124e0dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325fbf7c39864c58789bc8ebe853dbe9.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
名校
解题方法
【推荐1】如图所示,在多面体
中,四边形
与
均是边长为2的正方形,
为等腰直角三角形,
,且平面
平面
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/17/ec2460d9-9b83-456f-883a-d10cb81bca6e.png?resizew=194)
(1)求证:平面
平面
;
(2)求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20e38a1b5cfffd43a3405481a1d67cd.png)
![](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/ffffbccf0eb96123a237860c12a1b892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/163426db15398521c394a895103feaf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9367449a5847eade07e69f4feddcb027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce5e5a8d28b210b2b6ca2266a3745ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/17/ec2460d9-9b83-456f-883a-d10cb81bca6e.png?resizew=194)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7cc987fab8fc64dffda0cd31804c9a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94eda38f6d07e4ba8c5d468267a7660.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2ca54a64c82ce0d597dd68083a4124.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95ea5c2c1a7952b03b2b215b9f8c4e7.png)
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【推荐2】如图,在底面是直角梯形的四棱锥
,
,
面
.
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/19/2724641461043200/2724964862607360/STEM/6d6064d9fcb8472ab7614455ce33ed45.png?resizew=267)
(1)求四棱锥
的体积;
(2)求四棱锥
的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca27f9fa673fa014bb34f92355d6714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ffbcd82b98a9ae69aa4ee28bb49a907.png)
![](https://img.xkw.com/dksih/QBM/2021/5/19/2724641461043200/2724964862607360/STEM/6d6064d9fcb8472ab7614455ce33ed45.png?resizew=267)
(1)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
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解答题-证明题
|
较易
(0.85)
解题方法
【推荐1】在正四棱锥
中,
分别是
的中点,过直线
的平面
分别与侧棱
交于点
,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec6297cf195e60fd53375a501deb2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df7fc746f8c4801d8f2f0471ba3297e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930e85bc9f73e86cfb6ce9b076433f1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec6297cf195e60fd53375a501deb2ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/30/907c432c-b167-46c8-a605-242c4bd15210.jpg?resizew=235)
您最近一年使用:0次
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【推荐2】如图,在几何体
中,四边形
是边长为3的正方形,平面
与平面
的交线为
.
;
(2)若平面
平面
,H为
的中点,
,
,
,求该几何体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c197d8b99f2eb7477947e53461b5d548.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d740c5dcc2122cb8767b512abb429f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cd2d45694aaded7ff8b0ecaf48196ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e97297afadfc8c460f3e5ecd151def4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb469e8e6d3a40e0a2f4de0221fb448b.png)
您最近一年使用:0次