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加法例子
Author:
杨欣霞
GeoGebra
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折扣
球体的截面
异形操场
比較五件物件的重量
活动三:应用性质
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Homework4
Locus教學
拿破侖定理(內拿破侖)證明三
仿生機械
商高定理\水2的副本
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Parametric Curves
Congruence
Rotation
Equations
Parabola