2022·全国·模拟预测
解题方法
1 . 如图,在三棱锥
中,
⊥
,
,D为AB的中点,且
为等边三角形,
,
,则下列判断正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/348f3c08-2545-4c4d-a8f6-361017125a73.png?resizew=183)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878287dcfc8c30ec0f5acad9225d2c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79482c6de6bbd05affc78f9c625e52f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02caf4bc34411e9de5ac61bd2560028.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/348f3c08-2545-4c4d-a8f6-361017125a73.png?resizew=183)
A.![]() |
B.平面![]() |
C.![]() |
D.![]() |
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2022·全国·模拟预测
解题方法
2 . 已知四面体
中,若
,
,
分别为棱
和棱
上的点(异于棱的端点),
,
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a15a004f7d47ed595f063e60075223a.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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b141b00b53e9f4f85f18ac40d6ccbc5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf271d6475f5305bc922677b4cfe28c.png)
A.![]() ![]() | B.![]() |
C.![]() ![]() | D.若![]() ![]() ![]() |
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解题方法
3 . 如图,正方体
的棱长为2,线段
上有两个动点
,且
,则当
移动时,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4901a7eda97d6a307db76c4fb196ba3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/f458d29a-3d65-4514-8815-a79a62611b56.png?resizew=171)
A.![]() ![]() | B.![]() ![]() |
C.三棱锥![]() | D.三棱锥![]() |
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2022-12-03更新
|
504次组卷
|
4卷引用:黑龙江哈尔滨市第九中学校2021—2022年高一下学期期中数学试题
黑龙江哈尔滨市第九中学校2021—2022年高一下学期期中数学试题(已下线)专题强化三 直线、平面的平行和垂直问题-2022-2023学年高一数学《考点·题型·技巧》精讲与精练高分突破系列(人教A版2019必修第二册)江西省赣州市重点中学2022-2023学年高二下学期4月期中考试数学试题内蒙古自治区呼和浩特市土默特左旗第一中学2022-2023学年高一下学期期末数学试题
4 . (多选)如图,四边形ABCD是边长为5的正方形,半圆面
平面ABCD,点P为半圆弧AD上一动点(点P与点A,D不重合),下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/0849c88d-8d06-423b-ba52-8c74978ebd57.png?resizew=198)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3e2bed5ce5fe466395d2f5743d335b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/0849c88d-8d06-423b-ba52-8c74978ebd57.png?resizew=198)
A.三棱锥![]() |
B.三棱锥![]() ![]() |
C.在点P变化过程中,直线PA与BD始终不垂直 |
D.当直线PB与平面ABCD所成角最大时,点P不是半圆弧AD的中点 |
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2022-12-02更新
|
478次组卷
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3卷引用:河南省郑州市郑州外国语学校2022-2023学年高二上学期期中数学试题
名校
5 . 如图,四棱锥
的底面为正方形,
底面
,
,设平面
与平面
的交线为
,Q为
上的点,下列说法正确的为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/8bc0a7ac-5932-423b-b637-b963c20ef021.png?resizew=192)
![](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/b624742fe28db114e0554c6c87bff05c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/8bc0a7ac-5932-423b-b637-b963c20ef021.png?resizew=192)
A.![]() |
B.![]() ![]() |
C.四棱锥![]() |
D.直线![]() ![]() ![]() |
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2022-12-01更新
|
271次组卷
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2卷引用:湖南省邵阳市武冈市2022-2023学年高二上学期期中数学试题
6 . 正四棱柱
满足
,点
在线段
上移动(不含端点),
点在线段
上移动(不含端点),并且满足
.则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6c5282bc1ea20767a6c092c22c761ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df324441821dc5523bdd4ebf6903010c.png)
A.直线![]() ![]() |
B.直线![]() ![]() |
C.三角形![]() |
D.三棱锥![]() ![]() |
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2022-11-26更新
|
278次组卷
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2卷引用:广东省2023届高三上学期11月新高考学科综合素养评价数学试题
7 . 正方体
的棱长为1,
为
的中点( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
A.直线![]() ![]() | B.在直线![]() ![]() ![]() ![]() |
C.直线![]() ![]() ![]() | D.点B到平面![]() ![]() |
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8 . 已知两条直线m,n,两个平面α,β.下列说法正确的是( )
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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2022-11-22更新
|
397次组卷
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6卷引用:河北省石家庄市藁城新冀明中学2021-2022学年高一下学期期中数学试题
9 . 如图,已知正方体
的棱长为2,点
,
在平面
内,若
,
,则下述结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/ed6feb7e-75ca-4202-b9bc-4d04c62cc5b0.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5909a1f92b332acfb42d7bbf4ae9e67c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5621c78ba894e47b6161e27a664093a0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/ed6feb7e-75ca-4202-b9bc-4d04c62cc5b0.png?resizew=157)
A.异面直线![]() ![]() | B.![]() ![]() ![]() |
C.点![]() | D.直线![]() ![]() ![]() |
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10 . 正方体ABCD﹣A1B1C1D1的棱长为4,E,F分别为棱DD1,BB1上的动点,满足D1E=BF,则以下命题正确的有( )
A.三角形A1EF的面积始终保持不变 |
B.三棱锥C1﹣A1EF的体积始终不变 |
C.C1到面A1EF的距离最大为![]() |
D.若点G在线段EF上,且EG=2GF,则过G的平面截正方体外接球所得截面面积最小为![]() |
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