正二十面体和正十二面体外接、内切球面半径公式的推导
Publisher： 国家哲学社会科学学术期刊数据库
E-ISSN： 1008-9020|22|12|1-5
ISSN： 1008-9020
Source： 甘肃高师学报, Vol.22, Iss.12, 2017-01, pp. : 1-5
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Abstract