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勾股定理的毕氏证明（吴兴海)
Author:
吴兴海
GeoGebra
New Resources
拼砌四邊形
柱體建築師
判斷球體
兩位數除以一位數（二）
畫出對稱圖形
Discover Resources
不等式
圓柱切割
二維序列物件
拋物線6--包絡線法
游戏
Discover Topics
Symmetry
Surface
Subtraction
Vectors 2D (Two-Dimensional)
Rational Numbers