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Author:
周錦鋒
GeoGebra
New Resources
異分母分數減法
算柱 (兩位數)
畫出對稱圖形
錐體建築師
球体的体积推导（优化版）
Discover Resources
畢氏定理
曲線下面積
銀杏葉
Addition and Subtraction of Polynomials(多項式的加減法)
GGB分解的按鈕設計
Discover Topics
Statistical Characteristics
Trigonometry
Centroid or Barycenter
Pythagoras or Pythagorean Theorem
Symmetry