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減法
Author:
陳冠彰
Topic:
Subtraction
義守財數101級製作
GeoGebra
New Resources
找出對稱軸
四邊形的特性
拼砌四邊形
兩位數除以一位數（二）
兩位數除以一位數（一）
Discover Resources
不等式
線段與圓弧所構成的封閉區域之填色問題
Compare areas by cutting shapes Q2
高考真题椭圆
割补法
Discover Topics
Equilateral Triangles
Normal Distribution
Geometric Mean
Special Points
Arithmetic Mean