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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
兩位數加法
球體建築師
拼砌四邊形
兩組對邊相等的四邊形
異分母分數減法
Discover Resources
fold and unflod the cone with geogebra5.0
內公切線段長求法
Angle between 2 planes in a cube
三角函數圖形（全）
圖形C
Discover Topics
Complex Numbers
Geometric Transformations
Unit Circle
Symmetry
Distributions