名校
1 . 如图,在四棱锥
中,平面
平面ABCD,底面ABCD是菱形,
是正三角形,
,
是AB的中点.
(1)证明:
.
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13c772461aef1d9d715129636739748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/19/d9ec55b9-c009-4bab-8211-acdeff237272.png?resizew=205)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8a1ea8fca7c80a86dbe4d85cf9707d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2d5a1809db32ef8b997ad9080cc77e.png)
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2023-10-17更新
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1782次组卷
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8卷引用:甘肃省白银市部分高中2024届高三上学期阶段检测数学试题
名校
2 . 如图,在四棱锥
中,四边形
是菱形,
,
,
,点
是棱
的中点.
;
(2)求平面
与平面
所成角的余弦值.
![](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/32450995497b9e341be832e9efad3114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b10835116b9b777a666b438c907b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955e33abb9ac22ea8765272f1926f936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4125524caac016727c80d2722c5ba3.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
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2023-10-13更新
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9卷引用:甘肃省武威市2023-2024学年高二下学期6月月考数学试题
甘肃省武威市2023-2024学年高二下学期6月月考数学试题河北省邯郸市肥乡区第一中学2023-2024学年高二上学期10月月考数学试题河南省实验中学2023-2024学年高三上学期期中数学试题北京市东直门中学2024届高三上学期阶段性检测数学试题广东省高州市某校2023-2024学年高二上学期期末学情数学练习卷河南省焦作市第十二中学2023-2024学年高二上学期10月月考数学试题陕西省榆林市第一中学2023-2024学年高二上学期期中考试数学试题内蒙古自治区兴安盟乌兰浩特市第四中学2023-2024学年高二下学期第一次月考数学试题吉林省珲春市第一高级中学2023-2024学年高二下学期第一次月考数学试题
名校
解题方法
3 . 如图:在五面体
中,已知
平面
,
,且
,
.
平面
;
(2)求直线
与平面
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e8e59609f1c42d1aff0008ec23f31e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b52da73fed7ba981b1700a45a6faf27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375d6e43403dbfa7cd708d8194e676ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5f0cfc1049f84a04c81bd213afb8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
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2023-10-11更新
|
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4卷引用:甘肃省酒泉市瓜州县第一中学2024届高三上学期期末数学试题
名校
解题方法
4 . 如图,在四棱锥
中,底面
为矩形,
,点
为棱
上的点,且
.
(1)证明:
;
(2)若
,求直线
与平面
所成角的正弦值.
![](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/cb521988dc5f4b42e81e83470eaa134e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4999d4fbcbe15f78c29d518f25d317c2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/6/a4e34963-7ee0-40eb-9a61-784a358b69c5.png?resizew=165)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8e49d68afab33806a63d25a0861c7c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4d2c3a765b857f356f039b5821d107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2023-09-06更新
|
605次组卷
|
3卷引用:甘肃省天水市张家川回族自治县第一中学2024届高三上学期第二次月考数学试题
5 . 如图,在正三棱柱
中,已知
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2023/8/22/3308359427948544/3309301135204352/STEM/d474b0642d494d92a76fb68b7822c737.png?resizew=141)
(1)求直线
与
所成角的正切值
(2)求证:平面
平面
,并求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92105835f8075cb75dff244e908370b5.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/2023/8/22/3308359427948544/3309301135204352/STEM/d474b0642d494d92a76fb68b7822c737.png?resizew=141)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a7bcc1efb8a2ff57d64b6d057da463.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa046f0b820bd6c237ae6db5669fe13a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc7e774e4ae40c23bf4ceed179230ca.png)
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名校
解题方法
6 . 已知四棱锥
的底面是边长为4的正方形,顶点M在底面的射影恰为A点,且
为等腰三角形,则四棱锥
外接球的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4117625867a74cd022584500c76deca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4117625867a74cd022584500c76deca.png)
您最近一年使用:0次
2023-08-12更新
|
535次组卷
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3卷引用:甘肃省永昌县第一高级中学2022-2023学年高一下学期期末考试数学试题
名校
7 . 刻画空间弯曲性是几何研究的重要内容,用“曲率”刻画空间弯曲性,规定:多面体顶点的曲率等于
与多面体在该点的面角之和的差(多面体的面的内角叫做多面体的面角,角度用弧度制).例如,正四面体的每个顶点有
个面角,每个面角为
,所以正四面体在各顶点的曲率为
.在底面为矩形的四棱锥
中,
底面
,
,
与底面
所成的角为
,在四棱锥
中,顶点
的曲率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e2d7c958e99bcd9d7f251c19ee3544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17f6f7323211c409decf7d46479f7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.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/8987ae19d2d5c1955c53f18644556acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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2023-07-05更新
|
653次组卷
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10卷引用:甘肃省2022-2023学年高一下学期期末数学试题
甘肃省2022-2023学年高一下学期期末数学试题甘肃省陇南市九县2022-2023学年高一下学期期末考试数学试题陕西省商洛市2022-2023学年高一下学期期末数学试题河北省保定市定州市2022-2023学年高一下学期期末数学试题湖南省衡阳市第一中学2022-2023学年高一下学期期末数学试题河北省保定市2022-2023学年高一下学期期末数学试题辽宁省铁岭市昌图县第一高级中学2022-2023学年高一下学期期末数学试题(已下线)第五篇 向量与几何 专题21 曲率与曲率圆 微点3 曲率与曲率圆综合训练云南省开远市第一中学校2023-2024学年高二上学期9月测试数学试题新疆生产建设兵团第二师八一中学2023-2024学年高二上学期第一次月考数学试题
名校
8 . 如图,以等腰直角三角形斜边
上的高
为折痕,把
和
折成互相垂直的两个平面后,则下列四个结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
A.![]() | B.![]() |
C.平面![]() ![]() | D.二面角![]() ![]() |
您最近一年使用:0次
2023-06-25更新
|
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4卷引用:甘肃省兰州市城关区兰州第一中学2022-2023学年高一下学期期末数学试题
名校
9 . 如图,在四棱锥
中,
平面
,底面
为菱形,
分别为
,
的中点.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
平面
;
(2)若
,二面角
的大小为
,再从条件①、条件②这两个条件中选择一个作为已知.求
的长.
条件①:
;条件②:
.
注:如果选择条件①和条件②分别解答,按第一个解答计分.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/18/ab70b6c6-61c2-445f-b27e-f72a1d2d3859.png?resizew=184)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4746df85049d1651d3f6c30212a7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b8df87ef099eae61bb07018f2ab335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3672e603d06c9186edd20cfc662d8dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c383691e8d740830a865b12d66f7633.png)
注:如果选择条件①和条件②分别解答,按第一个解答计分.
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2023-06-17更新
|
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11卷引用:甘肃省天水市2022-2023学年高二下学期期末数学试题
甘肃省天水市2022-2023学年高二下学期期末数学试题北京市海淀区2023届高三二模数学试题北京卷专题20空间向量与立体几何(解答题)2023年普通高等学校招生全国统一考试模拟(北京卷)数学试题广东省广州市从化区从化中学2023届考前仿真最后模拟数学试题(已下线)专题10 立体几何综合-2(已下线)专题1.6 空间角的向量求法大题专项训练(30道)-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)重庆市第八中学校2023-2024学年高二上学期第一次月考数学试题北京市清华大学附属中学奥森分校2023-2024学年高二上学期期中考试数学试题(已下线)考点13 立体几何中的探究问题 2024届高考数学考点总动员【讲】北京市第九中学2023-2024学年中高二下学期开学考试数学试题
名校
10 . 如图,在正方体
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/19/20324776-998b-43b7-b0dc-ee1657c36416.png?resizew=166)
(1)求证:
平面
;
(2)求直线
和平面
所成的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/19/20324776-998b-43b7-b0dc-ee1657c36416.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231673dd67ab79d3c5da73904ceade1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/756d4d8a7051af5dae3ef56cb9e47c5b.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/756d4d8a7051af5dae3ef56cb9e47c5b.png)
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2023-06-16更新
|
465次组卷
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3卷引用:甘肃省张掖市某重点校2022-2023学年高一下学期6月月考数学试题