如图,在棱长都相等的三棱柱
中,
底面
,
,
分别是棱
,
的中点,则下列叙述错误的是
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/2023/9/4/3317684898316288/3318286128365568/STEM/b65b7cf2fa8f4d49929d5bc18082a7c8.png?resizew=4)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/6/d03ceee3-a214-4b8d-803b-1ef69e543bca.png?resizew=159)
A.![]() ![]() |
B.![]() |
C.![]() ![]() |
D.![]() |
23-24高二上·山东菏泽·开学考试 查看更多[2]
更新时间:2023-09-05 15:33:19
|
相似题推荐
多选题
|
适中
(0.65)
解题方法
【推荐1】已知
为正方体
底面
的中心,
为棱
上动点,
,
为
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028488a09ad3b412fc4fcd1128d593cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b46ed384a311245098a438820ab8717d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
A.平面![]() ![]() |
B.过![]() |
C.![]() ![]() |
D.![]() ![]() |
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解题方法
【推荐2】如图,在长方体
中,
,BC=2,M、N分别为棱
,
的中点,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/5/16/2980507222532096/2982514354692096/STEM/2cc1ee93-bf24-4b85-9a52-98b449a9811f.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97315b1fc75dc5bb8569d6fcb2cd668f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/2022/5/16/2980507222532096/2982514354692096/STEM/2cc1ee93-bf24-4b85-9a52-98b449a9811f.png?resizew=169)
A.A,D,![]() ![]() | B.AM与BN是异面直线 |
C.平面![]() | D.![]() |
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【推荐3】在正三棱柱
中,D,E,F分别为
,
,
的中点,
,M为BD的中点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cabc3303519ac16fc998913ad9f349c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
A.AF,BE为异面直线 |
B.![]() |
C.若![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
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【推荐1】如图,在直三棱柱
中,
,
,
,点M在线段
上,且
,N为线段
上的动点,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/d1f33241-6f9a-472f-a93d-09978ac0e2a7.png?resizew=114)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209377196940bffa8ffa5f55b9c59fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12405fa4e43fc6ccafa8e5b31bcdb6c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ef601ca1f9c4c031adab4ffed297f0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/d1f33241-6f9a-472f-a93d-09978ac0e2a7.png?resizew=114)
A.当N为![]() ![]() ![]() ![]() |
B.当![]() ![]() ![]() ![]() |
C.![]() ![]() |
D.存在点N,使得三棱锥![]() ![]() |
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解题方法
【推荐2】如图,已知正方体
的棱长为2,点P是线段AC的中点,点Q是线段
上的点,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/d7f6f93171329d508d491143b9d71f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/21/0d97cec7-aeb9-4877-b419-6e4149ed9db4.png?resizew=152)
A.若![]() ![]() | B.![]() |
C.点Q到平面![]() ![]() | D.![]() |
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【推荐3】在正方体
中,点
是线段
上一动点,则下列各选项正确的是( )
![](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/d7f6f93171329d508d491143b9d71f7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/27/2b32d92c-e0f9-44e9-81c5-e6b1e5356f1a.png?resizew=173)
A.![]() |
B.![]() ![]() |
C. 三棱锥![]() |
D.直线![]() ![]() ![]() |
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【推荐1】将边长为
的正方形ABCD沿BD折成如图所示的直二面角
,对角线BD的中点为O,下列说法正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/10/98ab7671-0eb9-4410-a374-82b54518d6db.png?resizew=172)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/10/98ab7671-0eb9-4410-a374-82b54518d6db.png?resizew=172)
A.![]() | B.![]() |
C.二面角![]() ![]() | D.点B到平面ACD的距离为![]() |
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解题方法
【推荐2】已知正方体
的棱长为2,P,Q分别为棱
,
的中点,M为线段BD上的动点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/1a1d801b-08f1-4485-9cb4-eb41af0b66c4.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbafedc202bd0d86c4dfdece9f8f4fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/1a1d801b-08f1-4485-9cb4-eb41af0b66c4.png?resizew=166)
A.![]() |
B.![]() |
C.三棱锥![]() |
D.M为BD的中点时,则二面角![]() |
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解题方法
【推荐3】如图所示,四边形
是圆柱的轴截面,点
是底面圆周上不同于
的任意一点,
分别为
的中点,点
在母线
上,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/525d7e6917760988c0ebae76132fd8e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/e32ea200-2d0c-42c7-b25d-08ecaacfffe5.png?resizew=139)
A.![]() ![]() | B.![]() ![]() |
C.![]() | D.若平面![]() ![]() ![]() ![]() |
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