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錯角---不平行綫
Author:
chanfushun
GeoGebra
New Resources
四邊形的特性
直角坐標平面上的旋轉變換
兩位數加法
算柱 (兩位數)
找出對稱軸
Discover Resources
猴子攀樹
集合
三角函數
拋物線4--平行四邊形法
One less prime number
Discover Topics
Tangent Function
Differential Calculus
Addition
Vectors 2D (Two-Dimensional)
Curve Sketching