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畢氏定理證明（Ｉ）
Author:
林辰燁
GeoGebra
New Resources
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
拼砌四邊形
兩位數加法
【案例】圆柱体内放置一个大球六个小球
Discover Resources
雙曲線的定義
Apollonius Problem kissing coin problem
拋物線與直線相交弓形區域
外资知名
圓的切線方程
Discover Topics
Area
Random Variables
Matrices
Diagrams
Arithmetic Mean