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Illusion-平行线错觉
Author:
王彤
GeoGebra
New Resources
異分母分數減法
錐體建築師
四邉形 (四年級) 教師版
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
Discover Resources
Angles at the same segment
量角器2
旋轉長方形
運用量度器比較角的大小
Copia de 分數除法5: x ÷ a/b (包含)
Discover Topics
Geometry
Line Segment
Centroid or Barycenter
Subtraction
Unit Circle