1 . 已知一个水平放置的四边形
的斜二测画法的直观图是菱形
,且
,
,则原四边形
的面积是______ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d609847e2ff3d64e5a514582c3ead0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e988e3a0ca128ded803c48e7baa69ba8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/510a1959405792d989f668757a8fc1fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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2 . 如图,一个三棱柱形容器中盛有水,侧棱
.若侧面
水平放置时,水面恰好过
,
,
,
的中点.那么当底面
水平放置时,水面高为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac5e1093a147c521c5e8d0d5e266db54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.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/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
A.7 | B.6 | C.4 | D.3 |
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3 . 已知正三棱锥的底面边长为4,侧棱长为8,则三棱锥的体积为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 已知正四棱台
的上、下底面边长分别为2和4,高为
,则该正四棱台的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 如图是一个正四棱台
,已知正四棱台的上、下底面的边长分别为
和
,体积为
,则此正四棱台的高为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a965ef4b938192a74937fcacb7a907f.png)
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6 . 如图,在正四棱台
中,
分别为棱
上的点.已知
,正四棱台
的高为6.
挖去三棱台
后所得几何体的体积;
(2)若某圆锥的体积与三棱台
的体积相等,该圆锥的底面为
的外接圆,求该圆锥的高.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48593b2bdb51550ec0a2b9d5893d36fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac71437051a1d39406922bf564dfabee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dbd7b9f8a799e90fc3a2420954675ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0e7905c14099a686ec5e3ed3bf01435.png)
(2)若某圆锥的体积与三棱台
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0e7905c14099a686ec5e3ed3bf01435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d0469336f71edd52dc9148c67db052.png)
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7 . 下列命题是真命题的是( )
A.直棱柱的侧面是矩形 |
B.正三棱锥的底面和侧面都是等边三角形 |
C.经过不共线的三个点的球有且只有一个 |
D.两个四棱锥可以拼成一个四棱柱 |
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8 . 如图所示,在三棱柱
中,若点
分别满足
,
,平面
将三棱柱分成体积为
的两部分,则
( )
![](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/70081f501627010e3afdf999c08cac16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee4139d603481deefdc0aab2b753c44c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85987061f1bc095faaa296d32f13b316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46bd37096f7014e00fd079823b6c3c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e68300e9ff6b6ea7943bdd2b3658b2c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:河南省信阳高级中学2023-2024学年高一下学期5月期中测试数学试题(二)
河南省信阳高级中学2023-2024学年高一下学期5月期中测试数学试题(二)(已下线)专题07 立体几何小题常考题型归类-期末考点大串讲(人教B版2019必修第四册)河南省创新发展联盟2023-2024学年高一下学期第二次月考(4月)数学试题
9 . 下列几何体中为球的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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10 . 已知
的面积为4,下图是
的直观图,已知
,
轴,过
作
轴于
,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac39f40f5d82bfb09d9dc5036fd4c531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56fa5cea6f5d8e2a8a898822deb09e4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2653bcab817704ebe955db23485fd34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cfad1ba71a78d8f415335cde2f8c52.png)
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