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Addition of 2 Directed Numbers
Author:
Chan Man Fai
Addition of 2 directed numbers
GeoGebra
New Resources
画直线等分三角形的面积
異分母分數減法
三位數除以一位數（一）
錐體建築師
直角坐標平面上的旋轉變換
Discover Resources
Sum of Exterior Angles of Polygons 多邊形外角和
畢氏定理的證明(三移動)
三角形重心
指數與對數函數
扇形轉動動畫(模考第二題)
描点法绘制函数图象，以一次函数为例
Discover Topics
Arithmetic Mean
Curve Sketching
Hyperbola
Inequalities
Integers