等腰三角形中,
,
.
为
中点,
为线段
上靠近点
的四等分点,将
沿
翻折,使
到
的位置,且平面
平面
,则四面体
的外接球的表面积为( )
A.![]() | B.![]() | C.![]() | D.![]() |
22-23高一下·湖北武汉·期末 查看更多[5]
湖北省武汉市常青联合体2022-2023学年高一下学期期末数学试题(已下线)模块一 专题4 立体几何中的组合体问题(已下线)模块一 专题6 立体几何中的组合体问题(人教B)(已下线)专题24 新高考数学模拟卷(一)(已下线)专题3 翻折变换 模型转化 练
更新时间:2023-07-08 16:15:55
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相似题推荐
单选题
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(0.4)
【推荐1】平行四边形
中,
,沿
将四边形折起成直二面角
,且
,则三棱锥
的外接球的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd491d367eb613a744a8682b2d4d9644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f193dbc22cb5bf7162c04010cf56749a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知正方体
的棱长为2,P,Q分别是
,
的中点,则经过点
,Q,C,D,C1的球的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】在四面体
中,
底面
,
的面积是
,若该四面体的顶点均在球
的表面上,则球
的表面积是( )
![](https://img.xkw.com/dksih/QBM/2018/4/25/1931918555586560/1933899012415488/STEM/0d333564-48b8-4a72-b551-8b60b360b907.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5496d8661d1d1feaf7c7be8974d5183d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2018/4/25/1931918555586560/1933899012415488/STEM/0d333564-48b8-4a72-b551-8b60b360b907.png?resizew=160)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,网格纸上小正方形的边长为1,粗线画出的是某三棱锥的三视图,则该三棱锥的外接球的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/81d4fb91-ab5b-42a6-87e8-b8ada505845b.png?resizew=235)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐3】如图1所示,四边形ABCD是边长为2的正方形,点E、F、M分别为线段BC、CD、BE的中点,分别沿AE、AF及EF所在直线把△AEB,△AFD和△EFC折起,使B、C、D三点重合于点P,得到如图2所示的三棱锥P﹣AEF,则下列结论中正确的有( )
A.点![]() ![]() ![]() |
B.直线AM与平面PEF所成角的正切值为2 |
C.三棱锥P﹣AEF的内切球半径为![]() |
D.过点M的平面截三棱锥P﹣AEF的外接球所得截面的面积的取值范围为![]() |
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【推荐1】如图,在长方体
中,
,
,
,E、F分别为棱
、
的中点.动点P在长方体的表面上,且
,则点P的轨迹的长度为( )
![](https://img.xkw.com/dksih/QBM/2020/10/14/2570919314464768/2572425359572992/STEM/cbd9e5eb11b64672a4f83c6ac2ba9837.png?resizew=170)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知点P是棱长为4的正四面体
表面上的动点,若MN是该四面体内切球的一条直径,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8eb37a4dd75318dcbd836395e575bd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐3】在棱长为1的正方体
中,
,
是线段
(含端点)上的一动点,则:①
;②当
为线段
的中点时,
取最小值;③三棱锥
体积的最大值是最小值的
倍;④
与
所成角的范围是
.上述命题中正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/f486c67d-2151-4b5b-bcc4-fa6a6f949ed0.png?resizew=189)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23f01af749100e1888bba06268843db.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80511b9849344e1d0906e3fc42d4b850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d6545c18bf8a85c72ff361c88c7799d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecad355286188fd317939fa50f9555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95a1d9a86dac105a6136ab2452b35b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/f486c67d-2151-4b5b-bcc4-fa6a6f949ed0.png?resizew=189)
A.1 | B.2 | C.3 | D.4 |
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【推荐1】如图1,直线
将矩形纸
分为两个直角梯形
和
,将梯形
沿边
翻折,如图2,在翻折的过程中(平面
和平面
不重合),下面说法正确的是
![](https://img.xkw.com/dksih/QBM/2018/10/23/2059641872105472/2059709062012928/STEM/8a885eb4ccbc4472a5d5a7df0d3eef26.png?resizew=187)
![](https://img.xkw.com/dksih/QBM/2018/10/23/2059641872105472/2059709062012928/STEM/7997c8b8a3a243328bacd826d5b248bd.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://img.xkw.com/dksih/QBM/2018/10/23/2059641872105472/2059709062012928/STEM/8a885eb4ccbc4472a5d5a7df0d3eef26.png?resizew=187)
![](https://img.xkw.com/dksih/QBM/2018/10/23/2059641872105472/2059709062012928/STEM/7997c8b8a3a243328bacd826d5b248bd.png?resizew=157)
图1 图2
A.存在某一位置,使得![]() ![]() |
B.存在某一位置,使得![]() ![]() |
C.在翻折的过程中,![]() ![]() |
D.在翻折的过程中,![]() ![]() |
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【推荐2】如图所示的四棱锥
中,底面
与侧面
垂直,且四边形
为正方形,
,点
为边
的中点,点
在边
上,且
,过
,
,
三点的截面与平面
的交线为
,则异面直线
与
所成的角为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/6/a9f49858-26f1-426c-a512-6037dc29df38.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71eda790a2fb0131ef2cac2763c84d99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2cd0e29f4f800b5be77d7ccb5cfed24.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/6/a9f49858-26f1-426c-a512-6037dc29df38.png?resizew=188)
A.![]() | B.![]() | C.![]() | D.![]() |
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