如图,三棱柱
中,
底面
,且
为正三角形,
为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/451ed369-a11b-41df-bf2f-feb355d9e6ff.png?resizew=163)
(1)求证:直线
平面
;
(2)求证:平面
平面
.
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/451ed369-a11b-41df-bf2f-feb355d9e6ff.png?resizew=163)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1496afecd92a619fbe5e9b736f06f4e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f7d9ac3c0e60f1419dc90a37ff731b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
17-18高一上·广东广州·期末 查看更多[9]
【全国百强校】广州市第二中学2017-2018学年度高一上数学期末复习题1【全国百强校】广州市第二中学2017-2018学年高一上学期期末复习一数学试题【校级联考】浙江省湖州市长兴县、安吉县、德清县2018-2019学年高二(上)期中考试数学试题江西省赣州市南康区南康中学2019-2020学年高二上学期10月月考数学试题1湖南省怀化市2019-2020学年高一上学期期末数学试题安徽省亳州市涡阳县第九中学2019-2020学年高二下学期期末数学(文)试题江苏省南京师范大学附属中学江宁分校2020-2021学年高二上学期期初数学试题江西省南昌市豫章中学2021-2022学年高二入学调研(B)数学(文)试题浙江省湖州市长兴县、安吉县、德清县等三县2018-2019学年高二上学期期中数学试题
更新时间:2021-08-24 23:04:06
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【推荐1】如图,在三棱锥V-ABC中,平面VAB⊥平面ABC,△VAB为等边三角形,AC⊥BC且AC=BC,O,M分别为AB,VA的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/832c95c1-48a8-42c4-b47c-c3aa8f42be73.png?resizew=119)
(1)求证:VB∥平面MOC;
(2)求证:平面MOC⊥平面VAB;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/832c95c1-48a8-42c4-b47c-c3aa8f42be73.png?resizew=119)
(1)求证:VB∥平面MOC;
(2)求证:平面MOC⊥平面VAB;
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【推荐2】如图,长方体
中,
,
,点
为
的中点. 求证:直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
平面PAC;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/006c1fca04581d10987540a84fe22dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4acc5d21a7490e6bed2453cc5147c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
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【推荐3】如图,在直四棱柱
中,底面
为菱形,
为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/d4c60607-0b5a-46db-a849-e121c4bff43a.png?resizew=160)
(1)求证:
平面
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d46f43920d092fa43fc2e588404d89c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/d4c60607-0b5a-46db-a849-e121c4bff43a.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f11f1840eb8b17e7b07c3fe7e987a9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb8c3e6d8e2843a2783a409e130bc0a.png)
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【推荐1】如图,四边形ABCD是正方形,PD//MA,MA⊥AD,PM⊥平面CDM,MA=AD
PD=1.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/80cad915-f7b3-4cbe-b37b-1887adeabc73.png?resizew=207)
(1)求证:平面ABCD⊥平面AMPD;
(2)求三棱锥A﹣CMP的高.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c70c0c5a061195b9941796b6a9acc4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/80cad915-f7b3-4cbe-b37b-1887adeabc73.png?resizew=207)
(1)求证:平面ABCD⊥平面AMPD;
(2)求三棱锥A﹣CMP的高.
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【推荐2】如图,在四棱锥
中,底面
是直角梯形,
,
//
,
,
,
平面
.
(1)证明:平面
平面
;
(2)设
,求平面
与平面
所成的二面角的余弦值.
![](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/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12143a06ed24558d8cc7ad39961d3e1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e0b7d845cbceccd3e76ca461fcc534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/ddfe1014-c5ee-440e-b389-acffae1c3a35.png?resizew=170)
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【推荐1】如图,四棱锥
的底面
是边长为2的菱形,
.已知
.
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285433262080/1571285438873600/STEM/01ac40461d5d4853ba9100835a2dbcc6.png?resizew=302)
(Ⅰ)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4125524caac016727c80d2722c5ba3.png)
(Ⅱ)若
为
的中点,求三棱锥
的体积.
![](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/e6906f59d09ce31956d6f5ea2b23fc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4c7ccee57161162e10294aecf2b0b4.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285433262080/1571285438873600/STEM/01ac40461d5d4853ba9100835a2dbcc6.png?resizew=302)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4125524caac016727c80d2722c5ba3.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d95e78927443bbadb5bf60f1c836ea24.png)
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【推荐2】如图,在四棱锥
中,平面
平面
,点
在棱
上,设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/08ea6e3d-5edb-4888-9349-fc96900c9eab.png?resizew=186)
(1)证明:
.
(2)设二面角
的平面角为
,且
,求
的值.
![](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/9772edb4ec7db3eab5e2bd00936ee21a.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/6822db67464507ee6997b93103003a36.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/08ea6e3d-5edb-4888-9349-fc96900c9eab.png?resizew=186)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dac702fe64edf1bc265da4b98cf2a0.png)
(2)设二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbeab80976db9b4689b9446cda06196a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7f904c086a749da7b7f8e26213a3bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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