名校
1 . 如图所示,已知
平面ACD,
平面ACD,
为等边三角形.
,F为CD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/e0004eda-022b-4ebf-8ca7-b85689d44603.png?resizew=153)
(1)证明:
平面BCE;
(2)证明:平面
平面CDE;
(3)求直线AD和平面BCE所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb59a3752da728cfa77557dd14d0f737.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/e0004eda-022b-4ebf-8ca7-b85689d44603.png?resizew=153)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d46554105150391e671609fc6348a18.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39282bdf319f30d7bc261e2e3ab3b1e4.png)
(3)求直线AD和平面BCE所成的角的正弦值.
您最近一年使用:0次
2022-07-02更新
|
814次组卷
|
5卷引用:江西省上饶市六校2021-2022学年高一下学期期末联考数学试题
江西省上饶市六校2021-2022学年高一下学期期末联考数学试题安徽省滁州市定远县民族中学2021-2022学年高一下学期期末考试数学试题(已下线)专题四 期末高分必刷解答题(32道)-《考点·题型·密卷》(已下线)模块四 专题3 期末重组综合练(江西)安徽省阜阳市颍上第一中学2023-2024学年高二上学期开学考试数学试题
解题方法
2 . 如图,已知正四棱台
的侧棱与底面所成的角为
,O为下底面
的中心,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/5/2296ba12-dde3-4b95-b0dd-620aad55b2c0.png?resizew=285)
(1)证明:
平面
;
(2)求正四棱台
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d134433600df75f2a5d0f35deb2cac90.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/5/2296ba12-dde3-4b95-b0dd-620aad55b2c0.png?resizew=285)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de4723157b880c06d8c3d379149316b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c3590fe4de811edc0723205a081334.png)
(2)求正四棱台
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
您最近一年使用:0次
解题方法
3 . 如图,直三棱柱
中,
,
,点E,F,G,H分别是棱
,BC,
,CA的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/2/ce9c0c36-6828-4e44-9719-1712240fbca2.jpg?resizew=177)
(1)求证:
平面
;
(2)求证:
平面BGH.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6ff6a807f5639faac835012b3728c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/2/ce9c0c36-6828-4e44-9719-1712240fbca2.jpg?resizew=177)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
您最近一年使用:0次
解题方法
4 . 如图,在单位正方体
中,M为线段
上动点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/18/543f4f08-0d62-4aec-8c7c-c800815e5aa2.png?resizew=168)
A.直线![]() |
B.![]() ![]() |
C.![]() ![]() |
D.点![]() ![]() |
您最近一年使用:0次
名校
5 . 如图,在四棱锥
中,
平面
,底面
是直角梯形,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/3/43eeef45-6de1-4cd9-b44a-9a482c42b51c.png?resizew=208)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
平面
.
(2)若二面角
的正切值为
,求二面角
的正弦值.
![](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/8fe19db910be27ec24a950337404e2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/3/43eeef45-6de1-4cd9-b44a-9a482c42b51c.png?resizew=208)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715cc9ea5e7d80930284ffb117142770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306681bd5aaa51e9c63ab3002e23dec5.png)
您最近一年使用:0次
2022-07-02更新
|
969次组卷
|
6卷引用:江西省上饶市四校2021-2022学年高一下学期第四次联考数学试题
名校
解题方法
6 . 如图,在四棱锥
中,平面
平面
,
为等边三角形,
,
,
,
是棱
上一点且
.
![](https://img.xkw.com/dksih/QBM/2022/6/30/3012436271202304/3013232979476480/STEM/895a5a6593a04079b80d62d7b0de78f6.png?resizew=208)
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dc26d4912a7f0b94a965550b064eea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17bc77b37986d658edad69992c5ea0c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d20fec32122b4a70b993976201c9ba9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df46cb89ec29c07e6d7b373cf845f7d7.png)
![](https://img.xkw.com/dksih/QBM/2022/6/30/3012436271202304/3013232979476480/STEM/895a5a6593a04079b80d62d7b0de78f6.png?resizew=208)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d8677ae5ca7acf874d93789425d172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af29254fe60a392c249c5791279e9c8.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92af7c045c412878d82935956215976.png)
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7 . 自古以来,斗笠是一个防晒遮雨的用具,是家喻户晓的生活必需品之一,主要用竹篾和一种叫做棕榈叶染白后编织而成,已列入世界非物质文化遗产名录.现测量如图中一顶斗笠,得到图中圆锥
模型,经测量底面圆
的直径
,母线
,若点
在
上,且
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/1/7a2dbbf1-3a38-4a6d-87a7-f1087f1c6cf7.png?resizew=246)
(1)证明:
平面
;
(2)求直线
和平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd20754e7a429dfa1e87eeff0907e6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0edce4f127d8f2da994e2ea78e4dee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1721f5eb9a589d1185a3d1dd225f6a11.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/2022/6/28/3011148409806848/3012440204394496/STEM/0da52f64d14645c7973f32be7d69a9e4.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/1/7a2dbbf1-3a38-4a6d-87a7-f1087f1c6cf7.png?resizew=246)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002cc6a0373255f39172cdee62fb6b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15b63176f43bc7a0654d0f6f45e7429.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15b63176f43bc7a0654d0f6f45e7429.png)
您最近一年使用:0次
8 . 下列说法正确的是( )
A.用一个平面截一个球,得到的截面是一个圆面 |
B.圆台的任意两条母线延长后一定交于一点 |
C.空间中没有公共点的两条直线一定平行 |
D.若直线![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2022-06-30更新
|
1017次组卷
|
2卷引用:江西省赣州市2021-2022学年高一下学期期末考数学试题
解题方法
9 . 已知m,n是两条异面直线,下列说法中正确的是( )
A.过直线m没有一个平面与直线n平行 |
B.过直线m有无数个平面与直线n平行 |
C.过直线m有两个平面与直线n平行 |
D.过直线m有且只有一个平面与直线n平行 |
您最近一年使用:0次
名校
解题方法
10 . 正方体
的棱长为1,E、F、G分别为
的中点,有下述四个结论,其中正确的结论是___________ .
![](https://img.xkw.com/dksih/QBM/2022/6/28/3011138861490176/3011893235122176/STEM/f175681640a24ac48ee7ec44e9132e73.png?resizew=199)
①点C与点B到平面
的距离相等;
②直线
与平面
平行;
③平面
截正方体所得的截面面积为
;
④直线
与直线
所成的角的余弦值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473ce0e22c4edc6ef768e0c12f59e483.png)
![](https://img.xkw.com/dksih/QBM/2022/6/28/3011138861490176/3011893235122176/STEM/f175681640a24ac48ee7ec44e9132e73.png?resizew=199)
①点C与点B到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04777f3f4661fa1c08a1cc0dfb807c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4700efcb84c4027ce7a50af0d5212fc.png)
④直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04777f3f4661fa1c08a1cc0dfb807c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f60e55e24dd6c296d71d773af418685a.png)
您最近一年使用:0次