2022高三·全国·专题练习
1 . 如图,四边形ABCD为矩形,ED⊥平面ABCD,AF∥ED.求证:BF∥平面CDE.
![](https://img.xkw.com/dksih/QBM/2022/1/6/2888614660308992/2891638872997888/STEM/e72da26dced14f4ab2b617939c4a3952.png?resizew=136)
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解题方法
2 . 已知空间中三条不重合的直线
,两个不重合平面
,以下证明推导过程错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e262af45c35bb6b11d0b15641d43ee5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2022-06-30更新
|
717次组卷
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2卷引用:浙江省舟山市2021-2022学年高二下学期期末数学试题
名校
3 . 如图,三棱柱
中侧棱与底面垂直,且AB=AC=2,AA1=4,AB⊥AC,M,N,P,D分别为CC1,BC,AB,
的中点.
(2)求平面PMN与平面ACC1A1所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9d2462e6dbd321cf3abae25a56adf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
(2)求平面PMN与平面ACC1A1所成锐二面角的余弦值.
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名校
4 . 如图,C,D分别是以AB为直径的半圆O上的点,满足
,△PAB为等边三角形,且与半圆O所成二面角的大小为90°,E为PA的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/3a73e84a-27cb-4df4-a354-5424ece967b6.png?resizew=138)
(1)求证:DE//平面PBC;
(2)求二面角A-BE-D的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e925392d0bf25a1a5c698ec1d8adea4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/3a73e84a-27cb-4df4-a354-5424ece967b6.png?resizew=138)
(1)求证:DE//平面PBC;
(2)求二面角A-BE-D的余弦值.
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2022-01-29更新
|
440次组卷
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3卷引用:江苏省南通市通州区2021-2022学年高三上学期期末数学试题
5 . 如图,
是圆柱的母线,边长为4的正
是该圆柱的下底面的内接三角形,
,
,
分别为
,
,
的中点,
是
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/6f4f1c5f-a4f5-41c5-9d90-4de27f5f50ad.png?resizew=159)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602ee324ca5bc3cf9ef251a061b431ab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/6f4f1c5f-a4f5-41c5-9d90-4de27f5f50ad.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b859ca54ab085edf70c1179a7d103a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
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2021-08-13更新
|
155次组卷
|
2卷引用:1号卷·A10联盟2022届全国高考第一轮总复习试卷数学(理科)试题(十五)
解题方法
6 . 在如图所示的几何体中,四边形ABCD为正方形,
平面ABCD,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/44534efe-687a-4d8b-85b1-25d60ccd1609.png?resizew=152)
(1)求证:
平面PAD;
(2)求直线AB与平面PCE所成角的正弦值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e2605cd905f703a8fda77540347ad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60634341a9603e24b2bbc6960abe3d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82465b63174087aeba7788ed984583d2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/44534efe-687a-4d8b-85b1-25d60ccd1609.png?resizew=152)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a20ea69475dcf57a5ff18c13eceaaa.png)
(2)求直线AB与平面PCE所成角的正弦值;
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名校
解题方法
7 . 如图,在三棱锥
中,
平面
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/3fcd7876-c63d-44fb-8bd0-873d2f6e1391.png?resizew=152)
(1)若
,
.求证:
;
(2)若
,
,
分别在棱
,
,
上,且
,
,
.求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/3fcd7876-c63d-44fb-8bd0-873d2f6e1391.png?resizew=152)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c71dbf267939080668be464f1aa60da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0530f462e5ec1e58c46e1f7644d0cc21.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98de02d1d5b7ac04bce54be393218922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f68184ccf2ee70eb5b4f037f58fa06b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760e8882e84ecd68bc889a55efce5d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d3f076d3f5a78fc081c252e9a55d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
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2021-08-07更新
|
351次组卷
|
4卷引用:第8章 立体几何初步(压轴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)
(已下线)第8章 立体几何初步(压轴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)(已下线)高一数学下学期期末精选50题(压轴版)-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)新疆石河子第一中学2021-2022学年高一下学期5月月考数学试题山西省太原市2020-2021学年高一下学期期末数学试题
8 . 如图1,等腰
中,
,点B,C,D为线段
的四等分点,且
.现沿BE,CF,DG折叠成图2所示的几何体,使
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/ebaa8837-244c-44aa-80be-655e8a672d43.png?resizew=205)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/67c38e20-b37c-4648-9909-c6ef4bd0386c.png?resizew=146)
(1)证明:
平面DCFG;
(2)求几何体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1872c9deda8f87faa24f7e77f85fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6389954c051c638232424f5d8576783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77115b510adfc0bd69e43d8b396853e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ec435aa1401dbce7863b531bf2f3e5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/ebaa8837-244c-44aa-80be-655e8a672d43.png?resizew=205)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/67c38e20-b37c-4648-9909-c6ef4bd0386c.png?resizew=146)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6ae72f5e5891249caa10c43224da89c.png)
(2)求几何体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9400174e3b54a5838dd99fa9b96ec134.png)
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解题方法
9 . 两个全等的正方形ABCD和ABEF所在平面相交于AB,
,
,且
,过M作
于H,求证:
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987791805448192/2996112877002752/STEM/c75dbbb611b34434992d761b795c03eb.png?resizew=250)
(1)平面
平面BCE;
(2)
平面BCE.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e44a83de5184b7564ee4081a103f3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08dcbd87943e47ced0915da7f1005e9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2866bff71c094e32c1320690fff746.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cbee40875112b88b7adcdcb297220f1.png)
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987791805448192/2996112877002752/STEM/c75dbbb611b34434992d761b795c03eb.png?resizew=250)
(1)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02a094f09aa0326b8ef73b400d0d8e7.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
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解题方法
10 . 在棱柱
中,底面
为平行四边形,
为线段
上一动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/f03e9da1-04dc-47a2-8519-faf5c107cca0.png?resizew=141)
(1)证明:
平面
;
(2)若
平面
,
,
,
,且
为线段
的中点,求点
到平面
的距离.
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/f03e9da1-04dc-47a2-8519-faf5c107cca0.png?resizew=141)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f844a41f79ea2b231b326f8633beac50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73845d4d663b3de0b281611fe2c762fe.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2f39d3fcb1664705228e683c2cc3b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41c5102280e6ac830944d335e9a1f0f.png)
您最近一年使用:0次