解题方法
1 . 阅读数学材料:“设
为多面体
的一个顶点,定义多面体
在点
处的离散曲率为
,其中
为多面体
的所有与点
相邻的顶点,且平面
,平面
,…,平面
和平面
为多面体
的所有以
为公共点的面.”解答问题:已知在直四棱柱
中,底面
为菱形,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/275fc582ec511e4c5a2a98f69da0cdff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20559c2fce92126341420a8170dacc2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183f3fdb3204864ff2f60c8c1dac2f2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db59863ffec5fa450ab8342fd8675c2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d7f18c3c9dae7e6d4f2e96281289f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f733e19f18ab01a3c022331805ed58a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeed487430a5b8a330f2d0c52166521a.png)
A.直四棱柱![]() |
B.若![]() ![]() ![]() ![]() |
C.若四面体![]() ![]() ![]() ![]() ![]() |
D.若直四棱柱![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-04-13更新
|
2546次组卷
|
6卷引用:东北三省四市教研联合体2023届高三一模数学试题
东北三省四市教研联合体2023届高三一模数学试题吉林省长春市2023届高三三模数学试题辽宁省大连市2023届高三一模数学试题(已下线)模块六 专题4 易错题目重组卷(辽宁卷)(已下线)模块六 专题13 易错题目重组卷(吉林卷)云南省曲靖市第二中学2023届高三二模预测数学试题
2022·全国·模拟预测
解题方法
2 . 已知正三棱锥
的底面
的面积为
,体积为
,球
,
分别是三棱锥
的外接球与内切球,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
A.球![]() ![]() |
B.二面角![]() ![]() |
C.若点![]() ![]() ![]() ![]() |
D.在三棱锥![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次