1 . 在如图所示的组合体中,三棱柱
的侧面
是圆柱的轴截面,
是圆柱底面圆周上不与
重合的一个点.
![](https://img.xkw.com/dksih/QBM/2020/1/13/2376343134355456/2376881717223424/STEM/f88df312-37f7-4860-9300-8157cfccd326.png)
(1)若圆柱的轴截面是正方形,当点
是弧
的中点时,求异面直线
与
的所成角的大小;
(2)当点
是弧
的中点时,求四棱锥
与圆柱的体积比.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/2020/1/13/2376343134355456/2376881717223424/STEM/f88df312-37f7-4860-9300-8157cfccd326.png)
(1)若圆柱的轴截面是正方形,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34f6658a6fa46b1597f382a3455ad04.png)
您最近一年使用:0次
2 . 将边长为
的正三角形
,按“斜二测”画法在水平放置的平面上画出为
,则
中最短边的边长为____________ .(精确到
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a71399ec88d4a3bd807e23bef04dce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a71399ec88d4a3bd807e23bef04dce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2c4d12b3a705daab723ab243b6cc88.png)
您最近一年使用:0次
2020-01-07更新
|
135次组卷
|
3卷引用:2017年上海市青浦区高三上学期期末质量调研(一模)数学试题
3 . 已知四边形
是矩形,
平面
,
,点
在线段
上(不为端点),且满足
,其中
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/2e24100c-e460-4ae9-857a-60006a5161f1.png?resizew=159)
(1)若
,求直线
与平面
所成的角的大小;
(2)是否存在
,使
是
的公垂线,即
同时垂直
?说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/7f8055613b1d1ef1459e7e031e47e41c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084ba23fde9e5ca476941ab6c6e50842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c54700d78ef19e4c650b2b03b4c188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/2e24100c-e460-4ae9-857a-60006a5161f1.png?resizew=159)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc2aa7f9f9a13f7192d2b6447953c39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5e567446b4cf24c5e9ef7e50316ec6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5e567446b4cf24c5e9ef7e50316ec6b.png)
您最近一年使用:0次
名校
4 . 如图,正方体
,则下列四个命题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/15fd0392-07a4-4c26-871f-fc8a7cafc65a.png?resizew=165)
①点
在直线
上运动时,直线
与直线
所成角的大小不变
②点
在直线
上运动时,直线
与平面
所成角的大小不变
③点
在直线
上运动时,二面角
的大小不变
④点
在直线
上运动时,三棱锥
的体积不变
其中的真命题是 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ecd4e1a1bb3221c3097e5fe84c11c9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/15fd0392-07a4-4c26-871f-fc8a7cafc65a.png?resizew=165)
①点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
③点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67094912ebf6dd7b27b835af55df4826.png)
④点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad99ef5e70de37345c708b758d545f.png)
其中的真命题是 ( )
A.①③ | B.③④ | C.①②④ | D.①③④ |
您最近一年使用:0次
2020-01-01更新
|
542次组卷
|
4卷引用:上海市青浦区2017-2018学年高二下学期期末数学试题
上海市青浦区2017-2018学年高二下学期期末数学试题浙江省宁波市余姚中学2020-2021学年高二上学期10月质量检测数学试题(已下线)专题5.4 期末考前必做30题(选择题提升版)-2020-2021学年高二数学下学期期末专项复习(沪教版)上海市嘉定区第一中学2022-2023学年高二下学期期中数学试题
5 . 《九章算术》中,将底面为长方形且有一条侧棱与底面垂直的四棱锥称之为阳马,将四个面都为直角三角形的四面体称之为鳖臑.首届中国国际进口博览会的某展馆棚顶一角的钢结构可以抽象为空间图形阳马.如图所示,在阳马
中,
底面
.
![](https://img.xkw.com/dksih/QBM/2019/12/11/2352802313920512/2352921896828928/STEM/e88b8892-775c-4ab2-acd2-30bc8d8bf1e8.png?resizew=243)
(1)若
,斜梁
与底面
所成角为
,求立柱
的长(精确到
);
(2)证明:四面体
为鳖臑;
(3)若
,
,
,
为线段
上一个动点,求
面积的最小值.
![](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://img.xkw.com/dksih/QBM/2019/12/11/2352802313920512/2352921896828928/STEM/e88b8892-775c-4ab2-acd2-30bc8d8bf1e8.png?resizew=243)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99571b26b832c7522ed80a7bc884eee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c12e76fbd84eeec721386bd3b04cc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6816ac6ff3f3df456865d0135802d5.png)
(2)证明:四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96e070966ddc1d779fcfae475715936.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cd5c4f8b106d01e0e431078e1a468b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b265d121f9ebc13671a5719604476a.png)
您最近一年使用:0次
6 . 如图,已知
是圆锥
的底面直径,
是底面圆心,
,
,
是母线
的中点,
是底面圆周上一点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/ea247f96-59aa-4712-8481-12ab30920482.png?resizew=137)
(1)求直线
与底面所成的角的大小;
(2)求异面直线
与
所成的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb3a4a1f748251e3a5232aec3f40e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79684a6e92297749c005e2b23cac9710.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/ea247f96-59aa-4712-8481-12ab30920482.png?resizew=137)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
您最近一年使用:0次
名校
7 . 下列四个图形中,正方体棱上的四个中点共面的图形是( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/f5ce630c-56db-42df-ba6b-34bbf24b948c.png?resizew=398)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/f5ce630c-56db-42df-ba6b-34bbf24b948c.png?resizew=398)
A.甲与乙 | B.乙与丙 | C.丙与丁 | D.丁与甲 |
您最近一年使用:0次
2019-12-06更新
|
365次组卷
|
2卷引用:上海市青浦区2016-2017学年高二下学期期终学业质量调研数学试题
11-12高一·全国·课后作业
名校
8 . 把一个大金属球表面涂漆,共需
公斤油漆,若把这个大金属球融化成
个大小都相同的小金属球,不计损耗,把这些小金属球表面都涂漆,需要这种油漆_______ 公斤.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a637e8f4e368c079616955509b1717e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332e71982612ea86c28b9f2054b1045c.png)
您最近一年使用:0次
2019-12-03更新
|
208次组卷
|
3卷引用:2017届上海市复旦大学附中浦东分校高三上学期第二次月考数学试题
2017届上海市复旦大学附中浦东分校高三上学期第二次月考数学试题(已下线)2012年人教A版高中数学必修二1.3空间几何体的表面积与体积练习卷(二)上海市华师大第一附属中学2018-2019学年高二下学期期末数学试题
名校
9 . 如图,棱锥
中,
平面
,底面
为直角梯形,且
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/e6b95220-adb4-47f9-ae72-e8df08852925.png?resizew=221)
(1)求证:
;
(2)求
与平面
所成的角的大小.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37591109b0a0ec5ffe2133f83310eca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da59b318eb096c1effa251d0ae6212ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/e6b95220-adb4-47f9-ae72-e8df08852925.png?resizew=221)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90da62f1614568a0b1e5e47ea85e7e3c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
2019-12-02更新
|
367次组卷
|
2卷引用:上海市青浦区2016-2017学年高二下学期期终学业质量调研数学试题
10 . 在正三棱柱
中,
分别为棱
,
的中点,去掉三棱锥
得到一个多面体
,已知
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/52317a21-22aa-46d5-9572-3f1e788276a7.png?resizew=168)
(1)求多面体
的体积;
(2)求异面直线
与
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c6f95346788277fa68e8408f6bada93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce23ec6e1b0933108310e065be30e5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc416a5b8dc234628e7475387888d82.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/52317a21-22aa-46d5-9572-3f1e788276a7.png?resizew=168)
(1)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e412ff2b584eef8536f3f44b18614d7a.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
2019-11-15更新
|
342次组卷
|
2卷引用:上海市青浦高级中学2022届高三上学期10月月考数学试题