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畢氏定理
Author:
王正豪
GeoGebra
New Resources
四邊形的特性
拼砌四邊形
三位數除以一位數（一）
兩位數加法
兩位數除以一位數（一）
Discover Resources
橢圓規
Proof of Pythagoras Theorem
三角柱算體積
微分量 (Differentials)
斜率是定值
Discover Topics
Difference and Slope
Isosceles Triangles
Surface
Integers
Dilation