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Addition of 2 Directed Numbers
Author:
Chan Man Fai
Addition of 2 directed numbers
GeoGebra
New Resources
三位數除以一位數（一）
兩組對邊相等的四邊形
拼砌四邊形
找出對稱軸
判斷球體
Discover Resources
兩數相加
fastest curve
PA + PB
百分數、分數和小數互化
計算圖形周界（小六下）
Discover Topics
Orthocenter
Circle
Parametric Curves
Special Points
Stochastic Process or Random Process