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连续开方（制作：谢建华，修订：孟宝兴）
Author:
孟宝兴
GeoGebra
New Resources
美國國旗 (Codex 版)
Fibonacci Clock
拼砌四邊形
Nested spiral octagon
算柱 (兩位數)
Discover Resources
三角形及多邊形
拋物線教學_2016
銳角三角函數
硬幣換算小遊戲
属于与不属于
Discover Topics
Unit Circle
Secant Line or Secant
Distributions
Linear Equations
Reflection