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正十二面體
Author:
侯杰材
正十二面體
GeoGebra
New Resources
找出對稱軸
兩組對邊相等和有直角的四邊形
畫出對稱圖形
兩位數加法
球體建築師
Discover Resources
商高定理
疊代三角形
基础知识
[洋葱] 费马点问题
金惠吉：正弦交流电演示
Discover Topics
Median Value
Definite Integral
General Quadrilateral
Geometric Distribution
Secant Line or Secant