2021高三·全国·专题练习
名校
1 . 如图,已知空间四边形ABCD中,AD=BC,M,N分别为AB,CD的中点,且直线BC与MN所成的角为30°,则BC与AD所成的角为_____________ .
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2 . 四棱锥
,底面为正方形
,边
为
中点,
平面
.
(1)若
为等边三角形,求三棱锥
的体积;
(2)若
的中点为
与平面
所成角为
,求
与
所成角的正切值.
![](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/a1ba61f50c7429166adadf8fa21c3627.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db807b09cc550f476b3f8fa0c6a14425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82867bb23bc067cce2848092c0222670.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6e5a7f3f5bf8e11ce978e69365578b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c20e88a33043f4279fff360c81006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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解题方法
3 . 如图,在正方体
中,
,
,
分别是
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/2021/4/29/2710441843171328/2761136388923392/STEM/71d2d24c-2766-4ce4-be01-5e486cc2a6e7.png?resizew=213)
(1)求异面直线
与
所成角的余弦值;
(2)棱
上是否存在点
,使得
平面
?若存在,求出
的值;若不存在,请说明理由.
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2021/4/29/2710441843171328/2761136388923392/STEM/71d2d24c-2766-4ce4-be01-5e486cc2a6e7.png?resizew=213)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f1158eaa2e338f564eb18de5bef1d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
(2)棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caaaf1437be69ecbdf8c9757d0347497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf02831e01a508b908d35d5eb04214c2.png)
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2021-07-10更新
|
500次组卷
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5卷引用:湖南省三湘名校教育联盟2020-2021学年高一下学期期中数学试题
湖南省三湘名校教育联盟2020-2021学年高一下学期期中数学试题江苏省南通市重点中学2020-2021学年高一下学期期中数学试题(已下线)专题23 立体几何中平行的存在性问题-【重难点突破】2021-2022学年高一数学常考题专练(人教A版2019必修第二册)江苏省盐城市伍佑中学2021-2022学年高一下学期学情调研(二)数学试题(已下线)专题08 空间直线与平面的平行问题(1)-期中期末考点大串讲
4 . 如图,四边形
是正方形,△
与△
均是以
为直角顶点的等腰直角三角形,点
是
的中点,点
是边
上的任意一点.
![](https://img.xkw.com/dksih/QBM/2015/3/25/1572027454300160/1572027459665920/STEM/11089b4bf19946629b08c59efbc2ec56.png)
(1)求证:
;
(2)求二面角
的平面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2015/3/25/1572027454300160/1572027459665920/STEM/11089b4bf19946629b08c59efbc2ec56.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ddaefd87840c63bb301477bfabf5b26.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea71ca581022f0091a634db730ac77ba.png)
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2016-12-03更新
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6卷引用:湖南省长沙市雅礼中学2020-2021学年高二上学期期末数学试题
湖南省长沙市雅礼中学2020-2021学年高二上学期期末数学试题(已下线)第六章 立体几何初步(基础过关)-2020-2021学年高一数学单元测试定心卷(北师大2019版必修第二册)2015届广东省广州市高三1月模拟理科数学试卷2015-2016学年河南省信阳高中高二12月考理科数学试卷人教A版高中数学必修二 2.3.2 平面与平面垂直的判定安徽省阜阳市太和第一中学2020-2021学年高二(平行班)上学期开学考试数学试题
5 . 正四面体P-ABC中,点M是BC的中点,则异面直线PM与AB所成角的余弦值为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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450次组卷
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3卷引用:湖南省邵阳市邵东市第一中学2021-2022学年高二上学期期中数学试题
6 . 如图,正方体
的棱长为
,M为线段
上的动点,则( )
![](https://img.xkw.com/dksih/QBM/2021/6/3/2735052054429696/2760017880997888/STEM/9daf6254-ffec-4c58-b46c-e3dab92f607b.png?resizew=238)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2021/6/3/2735052054429696/2760017880997888/STEM/9daf6254-ffec-4c58-b46c-e3dab92f607b.png?resizew=238)
A.当![]() ![]() ![]() ![]() |
B.当![]() ![]() ![]() |
C.![]() ![]() |
D.直线![]() ![]() ![]() |
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2卷引用:湖南省部分学校2020-2021学年高一下学期6月联考数学试题
7 . 如图,在正四棱锥
中,
,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/1/6/2854005844008960/2893115375976448/STEM/765c1c3c-8db9-4931-919f-e878fa21528f.png?resizew=192)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de2479cd9055e57e504d64ea7d97e71e.png)
![](https://img.xkw.com/dksih/QBM/2022/1/6/2854005844008960/2893115375976448/STEM/765c1c3c-8db9-4931-919f-e878fa21528f.png?resizew=192)
A.![]() | B.![]() |
C.正四棱锥![]() ![]() | D.平面![]() ![]() |
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2卷引用:湖南省天壹名校联盟2021-2022学年高二上学期第一次期中联考数学试题
8 . 若正四面体ABCD的棱长为2,E为CD的中点,则异面直线BE与AD所成角的余弦值等于________ .
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解题方法
9 . 已知正方体
的棱长为1,点
、
、
分别为棱
、
、
的中点,则下列结论中,正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/d65543fe-2fb7-456b-8323-fa1f8ce3d379.png?resizew=168)
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/d65543fe-2fb7-456b-8323-fa1f8ce3d379.png?resizew=168)
A.过![]() ![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.异面直线![]() ![]() ![]() |
D.四面体![]() ![]() |
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2021-11-05更新
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434次组卷
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4卷引用:湖南省常德市临澧县第一中学2021-2022学年高二上学期期中数学试题
解题方法
10 . 如图,在正方体
中.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/61c33c1d-bc66-43d7-b356-9d0ed9b0f7ba.png?resizew=166)
(1)求证:
面
;
(2)求异面直线
和
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/61c33c1d-bc66-43d7-b356-9d0ed9b0f7ba.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc78a86b12ba0b4553135a3a635fc418.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
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2021-07-08更新
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2卷引用:湖南省怀化市2020-2021学年高一下学期新博览期末大联考数学试题