269| 3
|
[几何] 正八面体的平行于它的一个面的截面的周长为定值 |
| ||
Related threads |
||
Author|
hbghlyj
Posted 2024-11-12 18:02
| ||
Author|
hbghlyj
Posted 2024-11-12 18:39
| ||
Author|
hbghlyj
Posted 2024-11-12 18:42
| ||
Mobile version|Discuz Math Forum
2025-6-6 02:19 GMT+8
Powered by Discuz!