名校
1 . 设
是两条不同的直线,
是两个不同的平面,下列命题中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() |
您最近一年使用:0次
2019-08-13更新
|
395次组卷
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2卷引用:四川省攀枝花市2018-2019学年高二下学期期末数学(理)试题
2 . 如图,在直三棱柱
中,平面
面
,
交
于点
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/88594a3c-1e1c-41e4-803f-57a9a5c98202.png?resizew=192)
(Ⅰ)求证:
;
(Ⅱ)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dee56b9f36ba8f76fe67b76383636b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4339a40ae9d1947ec3a4b3e2fa3a16cd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/88594a3c-1e1c-41e4-803f-57a9a5c98202.png?resizew=192)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73152c2b4298298c8b81dc16dc21f5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d68d3529c97d99daca0b3d59be9488d4.png)
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3 . 如图,在以
为顶点的多面体中,
面
,
,
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ea9d92e5c258a50af1e461c7388894.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/5223c296-672b-4218-9084-71a5055ee803.png?resizew=160)
(Ⅰ)请在图中作出平面
,使得
平面
,并说明理由;
(Ⅱ)证明:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e63a98f5ed97655875ffb3f9eb413d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a22d6b860f06fe23618b0d3de6768fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3768f6a03f319d864accca20e25c5bd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ea9d92e5c258a50af1e461c7388894.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/5223c296-672b-4218-9084-71a5055ee803.png?resizew=160)
(Ⅰ)请在图中作出平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c96bc9a285172c48e4726ee6492670ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d32e76582bf550593fdef53e081225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c96bc9a285172c48e4726ee6492670ef.png)
(Ⅱ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20af148464904e21f4374cc8fb886fba.png)
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解题方法
4 . 如图所示,正方形
的边长为
,已知
, 将直角
沿
边折起,折起后
点在平面
上的射影为
点,则翻折后的几何体
中
与
所成角的正切值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f2125dfe51596f77b060572f706cbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3814287dbb60d478bffc5366f9928b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/db65e7f0-c56f-4a58-af08-d04e797d4e26.png?resizew=265)
您最近一年使用:0次
2019-07-11更新
|
552次组卷
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6卷引用:四川省攀枝花市2018-2019学年高二下学期期末数学试题
名校
解题方法
5 . 在三棱柱
面
,
,
,
,则三棱柱
的外接球的表面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06cae4e0235a421ac9d220e0bc56f69a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb15541fa53381c9130217ccac69f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44090aeb408607f53dd26505e5ef2f63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-07-11更新
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3200次组卷
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11卷引用:四川省攀枝花市2018-2019学年高二下学期期末数学试题
四川省攀枝花市2018-2019学年高二下学期期末数学试题四川省叙州区第二中学2019-2020学年高二下学期期末模拟考试数学(理)试题四川省叙州区第二中学2019-2020学年高二下学期期末模拟考试数学(文)试题(已下线)考点28 空间几何体外接球(练习)-2021年高考数学复习一轮复习笔记贵州省贵阳市四校2021届高三上学期联合考试(一)数学(文)试题贵州省贵阳市四校2021届高三上学期联合考试(一)数学(理)试题(已下线)痛点11 立体几何中的组合体问题-2021年新高考数学一轮复习考点扫描四川省泸州市泸县第二中学2020-2021学年高二上学期期中考试数学(文)试题四川省泸州市泸县第二中学2020-2021学年高二上学期期中考试数学(理)试题青海省西宁市城西区青海湟川中学2020-2021学年高二上学期期末数学(理)试题四川省广安市武胜烈面中学校2021-2022学年高二上学期期中测试数学(理)试题
名校
解题方法
6 . 若圆锥的高为
,底面半径为
,则此圆锥的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-07-11更新
|
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3卷引用:四川省攀枝花市2018-2019学年高二下学期期末数学(理)试题
7 . 如图,在以
为顶点的多面体中,
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa64539ca44d1385217b4897bef25cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b9b8e52cd788d3a72a6fe6ef20e5bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87ffb3de83dea6b246028d656483bebc.png)
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/396d0c71-e9bb-4f96-8f15-8f7f9cd03213.png?resizew=174)
(1)请在图中作出平面
,使得
且
,并说明理由;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e63a98f5ed97655875ffb3f9eb413d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a22d6b860f06fe23618b0d3de6768fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa64539ca44d1385217b4897bef25cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b9b8e52cd788d3a72a6fe6ef20e5bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87ffb3de83dea6b246028d656483bebc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ea9d92e5c258a50af1e461c7388894.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/396d0c71-e9bb-4f96-8f15-8f7f9cd03213.png?resizew=174)
(1)请在图中作出平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab4c9403b0642d53d8068c63e7f67010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4686e3f93c6ad5b950d1fbb9d4133a93.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b87b3be10408261827291574434d8e.png)
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解题方法
8 . 如图是棱长为
的正方体的平面展开图,则在这个正方体中,直线
与
所成角的余弦值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/2019/7/9/2243217218519040/2243316686716928/STEM/12fa701e-6fd0-4165-a24e-501edd7ef7b3.png?resizew=226)
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2019-07-09更新
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987次组卷
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6卷引用:四川省攀枝花市2018-2019学年高二下学期期末数学(理)试题
名校
解题方法
9 . 在三棱锥
中,
平面
,
,
,则三棱锥
的外接球的表面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e50ab4cbc8debe2af64f00145b6f67a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44090aeb408607f53dd26505e5ef2f63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-07-09更新
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2723次组卷
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7卷引用:四川省攀枝花市2018-2019学年高二下学期期末数学(理)试题
名校
解题方法
10 . 某几何体的三视图如图所示,则该几何体的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/3cd0dfe5-ba9a-44ac-b0ff-f7bb4ae9ca53.png?resizew=133)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/3cd0dfe5-ba9a-44ac-b0ff-f7bb4ae9ca53.png?resizew=133)
A.![]() | B.![]() | C.![]() | D.![]() |
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17卷引用:四川省攀枝花市2018-2019学年高二下学期期末数学(理)试题
四川省攀枝花市2018-2019学年高二下学期期末数学(理)试题四川省攀枝花市2018-2019学年高二下学期期末数学试题四川省攀枝花市第七高级中学2022-2023学年高三上学期第四次诊断考试理科数学试题2016届河北省衡水中学高三下学期二调考试文科数学试卷2016届河南省洛阳市一中高三下学期第二次模拟理科数学试卷2017年江西省“北阳四校”高三开学摸底考试数学(文科)四川省三台中学2017-2018学年高二上学期开学考试数学试题河南省林州市第一中学2018届高三12月调研考试数学(理)试题【全国百强校】湖北省仙桃中学2019届高三8月考试数学试题(已下线)狂刷33 空间几何体的表面积和体积-学易试题君之小题狂刷2020年高考数学(理)江西省南昌市第二中学2019-2020学年高二下学期期末考试数学(理)试题黑龙江省哈尔滨师范大学青冈实验中学校2019-2020学年高二上学期开学考试(8月)数学试题(已下线)【新东方】杭州新东方高中数学试卷340四川省南充高级中学2020-2021学年高二下学期期中数学(文)试题四川省成都市蒲江县蒲江中学2020年高三上学期11月月考数学(理)试题四川省成都市蒲江县蒲江中学2020-2021学年高三上学期11月月考数学(文)试题广西桂林市2022届高三10月教学质量检测数学(文)题