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正二十面體
Author:
侯杰材
正二十面體
GeoGebra
New Resources
球体的体积推导（优化版）
画直线等分三角形的面积
兩組對邊相等的四邊形
異分母分數減法
錐體建築師
Discover Resources
用面積逼近圓周率
Square
test
圓冪性質
Template: 對稱01
Discover Topics
Upper and Lower Sum or Riemann Sum
Percentages
Function Graph
Algebra
Hypergeometric Distribution