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triDyn
Author:
dxdcn
GeoGebra
New Resources
圓的切線方程
圓的基本性質
百分數及其應用
撒针估算面积实验
折扣
Discover Resources
binary number system
立體形體 - (18)正方體的表面積計算
等距共軛點(isotomic conjugate point)
初中二次函数课件设计（毕业设计）
小正多边形在大正多边形内的滚动（边长不相等）
Discover Topics
Special Points
Straight Lines
Algebra
Tangent Function
Circle