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平均線
Author:
Tsang Ngan
GeoGebra
New Resources
異分母分數減法
找出對稱軸
判斷球體
三位數除以一位數（一）
柱體建築師
Discover Resources
Area of trapezoid
GGB基礎教學Reuleaux
三线八角
四邊形內多個四邊型旋轉
角平分線製作
Discover Topics
Geometry
Parallelogram
Linear Programming or Linear Optimization
Tangent Function
Hypothesis Testing