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根據百分率找數量（二）: 例4的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
找出對稱軸
異分母分數減法
GeoGebra笔记功能体验课件
sanjiaohanshu
四邊形的特性
Discover Resources
math 2-2
测试网页
比例線段截面積
Animation of Refraction
pythLK
Discover Topics
Arithmetic Mean
Circumcircle or Circumscribed Circle
Natural Numbers
Expected Value
Exponent