正二十面体和正十二面体外接、内切球面半径公式的推导  

The Circumscribed and Inscribed Sphere Radius Formula of Regular Icosahedron and Dodecahedron

作　　者：蒋德瀚[1] 

机构地区：[1]兰州城市学院,甘肃兰州730070

出　　处：《甘肃高师学报》2017年第12期1-5,共5页Journal of Gansu Normal Colleges

摘　　要：根据梅文鼎几何图形,推导出正二十面体、正十二面体外接和内切球面半径公式.According to the geometrical pattern of Mei Wending, the circumscribed and inscribed sphere radius formula of regular icosahedron and dodecahedron are leading out, the golden section number is obtained as well in process of the calculation.

关 键 词：正二十面体 正十二面体 外接球面半径 内切球面半径 黄金分割 

分 类 号：G634.6[文化科学—教育学]