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so fing
Author:
martic1101
GeoGebra
New Resources
兩位數除以一位數（二）
拼砌四邊形
画直线等分三角形的面积
四邊形的特性
異分母分數減法
Discover Resources
畢氏定理動畫
Sphere[O, r]
单位圆画三角函数图像的副本
Quiz on Addition and Subtraction of Directed Numbers (2)
極線對偶定理 / polar duality theorem 的複本
Discover Topics
Quadratic Functions
Curve Sketching
Statistics
Intersection
Arithmetic Mean