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Area of Trapezium
Author:
Alex CHIK
GeoGebra
New Resources
畫出對稱圖形
柱體建築師
異分母分數減法
兩位數除以一位數（二）
算柱 (兩位數)
Discover Resources
大樂透開獎機
凹透镜
图形动画3
索瑪立方體
等轴双曲线
Discover Topics
Trigonometry
Quadrilaterals
Hypergeometric Distribution
Random Experiments
Similarity Transformation or Similarity