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moon1
Author:
ypy
GeoGebra
New Resources
画直线等分三角形的面积
兩位數加法
異分母分數減法
拼砌四邊形
四邉形 (四年級) 教師版
Discover Resources
圓交與公切線
Parallelogram 01
音調與空氣柱
黃金矩形
國旗上傳測試
Discover Topics
Expected Value
Similarity Transformation or Similarity
Pythagoras or Pythagorean Theorem
Incircle or Inscribed Circle
Fractions