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Addition of 3 Directed Numbers
Author:
Chan Man Fai
Addition of 3 Directed Numbers
GeoGebra
New Resources
拼砌四邊形
兩位數除以一位數（一）
球体的体积推导（优化版）
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
Discover Resources
Dividing in a Ratio 按比分物
分數減法
多邊形周界A
完整地球儀
對稱圖形
Discover Topics
Parallelogram
Fractal Geometry
Tangent Function
Derivative
Cosine