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Author:
Tsang Kin Fun Francis
GeoGebra
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兩位數除以一位數（二）
判斷球體
兩組對邊相等的四邊形
画直线等分三角形的面积
GeoGebra笔记功能体验课件
Discover Resources
GGB研習成果01
Geometry: Angles Sum of Triangle (幾何：三角形內角和)
gjc090c23 圓內三角形與角度
Golden Ratio (phi) Collection
圖四的副本
Discover Topics
General Quadrilateral
Integral Calculus
Geometric Transformations
Diagrams
Upper and Lower Sum or Riemann Sum