名校
1 . 如图,在四棱锥
中,平面
平面
,
,底面
为等腰梯形,
,且
.
平面
;
(2)若点A到平面PBC的距离为
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb05b8b630052ff544249ebd72d95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852847ba02c2b62abf27e9cc11f596a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若点A到平面PBC的距离为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2024-05-23更新
|
1393次组卷
|
4卷引用:专题06 空间角、距离的计算-期末考点大串讲(苏教版(2019))
(已下线)专题06 空间角、距离的计算-期末考点大串讲(苏教版(2019))黑龙江省佳木斯市第一中学2023-2024学年高三第三次模拟考试数学试题(已下线)专题08 立体几何大题常考题型归类-期末考点大串讲(人教B版2019必修第四册)黑龙江省绥化市望奎县第一中学2023-2024学年高一下学期6月月考数学试题
2022高一·全国·专题练习
名校
解题方法
2 . 已知平面α,β,γ,则下列命题中正确的是( )
A.α⊥β,β⊥γ,则α∥γ |
B.α∥β,β⊥γ,则α⊥γ |
C.α∩β=a,β∩γ=b,α⊥β,β⊥γ,则a⊥b |
D.α⊥β,α∩β=a,a⊥b,则b⊥α |
您最近一年使用:0次
2022-04-11更新
|
1492次组卷
|
4卷引用:8.6.3 第2课时 平面与平面垂直的性质(课时作业)-2021-2022学年高一数学同步精品课件+课时作业(人教A版2019必修第二册)
(已下线)8.6.3 第2课时 平面与平面垂直的性质(课时作业)-2021-2022学年高一数学同步精品课件+课时作业(人教A版2019必修第二册)(已下线)第8章立体几何初步(基础、典型、易错、压轴)分类专项训练(已下线)13.2.4平面与平面位置关系(3)面面垂直判定与性质(备作业)-【上好课】2021-2022学年高一数学同步备课系列(苏教版2019必修第二册)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
3 . 如图所示,在等腰梯形
中,
,在等腰梯形
中,
,将等腰梯形
沿
所在直线翻折,使得E,F在平面
上的射影恰好与A,B重合.
![](https://img.xkw.com/dksih/QBM/2022/1/23/2901515314233344/2909373355532288/STEM/62185e876d1c45a08bf64d42c5885951.png?resizew=553)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/873d7c7185a904b8ed550902ec1f5820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/725aa3cd046b43f38926fc7c595d9046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2022/1/23/2901515314233344/2909373355532288/STEM/62185e876d1c45a08bf64d42c5885951.png?resizew=553)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
您最近一年使用:0次
名校
4 . 如图,在四棱台
中,底面
为矩形,平面
平面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/dedd57f5-edc7-4b86-8150-ba5e12922bbc.png?resizew=172)
(1)求证:
;
(2)求直线
和平面
所成角的正弦值.
![](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/384ffa4e596b6c7b8e270217a47f7227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6503add5811927fc11d86f2174f79f1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/dedd57f5-edc7-4b86-8150-ba5e12922bbc.png?resizew=172)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e076e68ef7bab94a6aba990f83159f51.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
您最近一年使用:0次
2022-02-04更新
|
1520次组卷
|
3卷引用:技巧03 解答题解法与技巧(练)--第二篇 解题技巧篇-《2022年高考数学二轮复习讲练测(浙江专用)》
(已下线)技巧03 解答题解法与技巧(练)--第二篇 解题技巧篇-《2022年高考数学二轮复习讲练测(浙江专用)》浙江省绍兴市2021-2022学年高三上学期期末数学试题上海市实验学校2024届高三上学期暑假阶段反馈数学试题
2022高三·全国·专题练习
5 . 如图,已知平面
与直线
均垂直于
所在平面,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/5cadd582-9bd2-46d1-b58c-d19122cdfa19.png?resizew=159)
(1)求证:
平面
;
(2)若
平面
,求二面角
的钝二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee188333e1fa99417aede565c6a4a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7281b641656a5992abaafb4190ca9afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad01edc5d969ef89c350b5614c386db9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/5cadd582-9bd2-46d1-b58c-d19122cdfa19.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee188333e1fa99417aede565c6a4a136.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b61346bd4091070ba84a4046f87f365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee188333e1fa99417aede565c6a4a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44002ba2148c32bacdab4c0a498ffd4a.png)
您最近一年使用:0次
6 . 在空间几何体
中,
平面
,平面
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/1/9/2890852519501824/2893539641008128/STEM/6e265923-9fb9-4e59-b383-67fbd7e8f240.png?resizew=166)
(1)求证:
平面
;
(2)若
平面
,试比较三棱锥
与
的体积的大小,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8a3ffc690e57df945f132e9bffd085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebf7c14f4ecf33ee9938a76c3ac45d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b12b6d1e4fc6fce56bf1bd6d4e41ae1.png)
![](https://img.xkw.com/dksih/QBM/2022/1/9/2890852519501824/2893539641008128/STEM/6e265923-9fb9-4e59-b383-67fbd7e8f240.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee188333e1fa99417aede565c6a4a136.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b61346bd4091070ba84a4046f87f365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee188333e1fa99417aede565c6a4a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c61c958e98e615a532efaa67d48c3de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
您最近一年使用:0次
解题方法
7 . 在矩形
中,
,
,
在
上运动,设
,将
沿
折起,使得平面
垂直于平面
,
长最小时
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3ebe2470b9f98ce309de1ce700a4b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c3b7bc938bd932c06cfd2ad09bc88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/24/6cf42247-3218-44ec-95ab-c3e72cea5f4b.png?resizew=220)
您最近一年使用:0次
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8 . 已知边长为
的菱形
中,
,将
沿
翻折,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a311738db3fc5431d14a0942542a62e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
A.在翻折的过程中,直线![]() ![]() ![]() |
B.在翻折的过程中,三棱锥![]() ![]() |
C.在翻折过程中,三棱锥![]() ![]() |
D.在翻折的过程中,点![]() ![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2021-08-07更新
|
1138次组卷
|
4卷引用:第8章立体几何初步(基础、典型、易错、压轴)分类专项训练
(已下线)第8章立体几何初步(基础、典型、易错、压轴)分类专项训练江苏省宿迁市2020-2021学年高一下学期期末数学试题(已下线)第8章 立体几何初步(典型30题专练)-2021-2022学年高一数学考试满分全攻略(人教A版2019必修第二册)辽宁省沈阳市第十一中学2023-2024学年高二上学期10月月考数学试题
解题方法
9 . 如图,四棱锥
的底面是平行四边形,平面
⊥平面
,且△
是正三角形,点
是
的中点,点
,
分别在棱
,
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/14e00783-6ade-499a-99ec-eb79b2550012.png?resizew=234)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
;
(2)若
,
,
,
共面,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
;
(3)在侧面
中能否作一条直线段使其与平面
平行?如果能,请写出作图的过程并给出证明;如果不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/14e00783-6ade-499a-99ec-eb79b2550012.png?resizew=234)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)在侧面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1879cd22c769c81e5f3166c49f13a508.png)
您最近一年使用:0次
名校
10 . 如图,在矩形
中,
,
,
为线段
上一点,且满足
,现将
沿
折起使得
折到
,使得平面
平面
,则下列正确的是( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/f385df55-5576-4aeb-b3db-4427934a8518.png?resizew=447)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d29fe21f3e58b359cc9857f7136fabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592849d99e570c23906687097b1072ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a766df13dd9c7577db587fddbf536fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/f385df55-5576-4aeb-b3db-4427934a8518.png?resizew=447)
A.线段![]() ![]() ![]() ![]() |
B.线段![]() ![]() ![]() ![]() |
C.直线![]() ![]() ![]() |
D.面![]() ![]() ![]() |
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