名校
1 . 如图,
为正方体
中
与
的交点,则
在该正方体各个面上的射影可能是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/778a3436-7431-444e-87a0-7886d8f91182.png?resizew=370)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/778a3436-7431-444e-87a0-7886d8f91182.png?resizew=370)
A.①②③④ | B.①③ | C.①④ | D.②④ |
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|
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5卷引用:2017年上海市长宁、金山、青浦区高考二模数学试题
名校
2 . 在空间直角坐标系
中,已知
,
,
,
,若
,
,
分别表示三棱锥
在
,
,
坐标平面上的正投影图形的面积,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a834024400d0730af3e640ca4d5f54b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b889a93a6b77ffd108de41bc470d08f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ecf78090de9b894a74602892e5412b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd471a3e64b76d4c5944458aeb707297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e8611b09c15dfea54a36bf8a15cd29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef1e8a88d934eca5399decc64fdbd43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd48d1ef9e8cd3b7aea60fd95b70fb6.png)
A.![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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2021-09-08更新
|
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|
3卷引用:青海省西宁市城西区青海湟川中学2020-2021学年高二上学期期中数学试题
2020高三·全国·专题练习
3 . 如图所示,在正方体
中,
、
分别是
、
的中点,则图中阴影部分在正方体的六个面上的正投影(投射线垂直于投射面所得的平行投影)可能为下图中的( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/b0218b1b-0183-4922-b0b2-a13aca5869cb.png?resizew=145)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/f19d4936-aa63-4bd4-ae04-29267b672842.png?resizew=414)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/b0218b1b-0183-4922-b0b2-a13aca5869cb.png?resizew=145)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/f19d4936-aa63-4bd4-ae04-29267b672842.png?resizew=414)
A.①③ | B.②④ | C.②③④ | D.③④ |
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2020高三·全国·专题练习
4 . 如图所示,在正方体
中,
、
分别是
、
的中点,则图中阴影部分在正方体的六个面上的正投影(投射线垂直于投射面所得的平行投影)可能为下图中的( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/830d5ff8-453c-436b-b5fb-8b45c576273a.png?resizew=149)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/830d5ff8-453c-436b-b5fb-8b45c576273a.png?resizew=149)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
解题方法
5 . 如图所示,在正方体ABCDA1B1C1D1中,M,N分别是棱AB,CC1的中点,△MB1P的顶点P在棱CC1与棱C1D1上运动,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/d413db6a-eab0-48c2-a14a-5ffccff201e9.png?resizew=168)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/d413db6a-eab0-48c2-a14a-5ffccff201e9.png?resizew=168)
A.平面MB1P⊥ND1 |
B.平面MB1P⊥平面ND1A1 |
C.△MB1P在底面ABCD上的射影图形的面积为定值 |
D.△MB1P在侧面DD1C1C上的射影图形是三角形 |
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6 . 已知正方体的棱长为2,平面
过正方体的一个顶点,且与正方体每条棱所在直线所成的角相等,则该正方体在平面
内的正投影面积是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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2020-06-25更新
|
238次组卷
|
3卷引用:内蒙古呼和浩特市2020届高三第二次质量普查调研考试(二模)数学(理)试题
名校
7 . 下图是棱长为2的正方体
木块的直观图,其中
分别是
,
,
的中点,平面
过点
且平行于平面
,则该木块在平面
内的正投影面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/ebdcde97-424a-4255-9dec-a0bbe8af5f89.png?resizew=221)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76e955a4c2ae8528a6103a58e5c6e050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbafedc202bd0d86c4dfdece9f8f4fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbd36496e3751b0d35b6a9be53bf058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/ebdcde97-424a-4255-9dec-a0bbe8af5f89.png?resizew=221)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-06-09更新
|
1095次组卷
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7卷引用:2020届河南省六市(南阳市、驻马店市、信阳市、漯河市、周口市、三门峡市)高三第二次联合调研检测数学(理科)试题
2020届河南省六市(南阳市、驻马店市、信阳市、漯河市、周口市、三门峡市)高三第二次联合调研检测数学(理科)试题河南省六市(南阳市、驻马店市、信阳市、漯河市、周口市、三门峡市)2020届高三第二次模拟考试数学(理)试题江西省南昌二中2020届高三(6月份)高考数学(理科)校测试题(一)(已下线)对点练42 空间几何体的结构特征-2020-2021年新高考高中数学一轮复习对点练(已下线)专题06+直线、平面垂直的判定及其性质(基础练)-2020-2021学年高一数学十分钟同步课堂练(人教版必修2)(已下线)热点10 三视图还原问题-2022年高考数学核心热点突破(全国通用版)【学科网名师堂】(已下线)卷14-【赢在高考·黄金20卷】备战2021高考数学全真模拟卷(北京专用)
8 . 过正方体
的顶点
作平面
,使得正方体的各棱与平面
所成的角都相等,则满足条件的平面
的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 如图直线
平面
,垂足为
,正四面体
的棱长为2,
在平面
内,
是直线
上的动点,则当
到
的距离为最大时,正四面体在平面
上的射影面积为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/a6cadbad-99e9-49c2-a6db-7905ff607315.png?resizew=173)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df740160690029ac1e730c85f20347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/a6cadbad-99e9-49c2-a6db-7905ff607315.png?resizew=173)
A.![]() | B.![]() | C.![]() | D.4 |
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解题方法
10 . 已知底面为边长为
的正方形,侧棱长为
的直四棱柱
中,
是上底面
上的动点.给出以下四个结论中,正确的个数是( )
①与点
距离为
的点
形成一条曲线,则该曲线的长度是
;
②若
面
,则
与面
所成角的正切值取值范围是
;
③若
,则
在该四棱柱六个面上的正投影长度之和的最大值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
①与点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf9403ecd2ae90269297499ba6c7182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cfdc6224181d44e63aab43ddaf07ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c39f47d503a6c41ad311c307507bc8.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4b4c90faa3f4e43393b38400ff44b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec978eb43bc4f9e7df83b0d0195dcda.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-03-29更新
|
849次组卷
|
4卷引用:第34练 立体几何的综合-2021年高考数学(理)一轮复习小题必刷
(已下线)第34练 立体几何的综合-2021年高考数学(理)一轮复习小题必刷2019届湖南省岳阳市第一中学高三第二次模拟数学(理)试题安徽省合肥市双凤高级中学2022届高三一模文科数学试题安徽省合肥市双凤高级中学2022届高三三模文科数学试题