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Question 9
Author:
Shum Kwok Ching
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
垂直線的斜率
漂亮的摇摆曲线
球体的体积推导
兩位數除以一位數（二）
讀磅
Discover Resources
三角形的心
Distributive Law of Multiplication 2 (乘法的分配率 2)
earth
动点
三角函数的概念核心知识点
Discover Topics
Real Numbers
Mathematics
Inequalities
Definite Integral
General Quadrilateral