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play tennis
Author:
李春培
play tennis
GeoGebra
New Resources
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
異分母分數減法
三位數除以一位數（一）
兩位數除以一位數（二）
Discover Resources
二次函數：一般式轉標準式 (配方法)
Generalized Pythagorean Theorem
九點圓
Area between two curves
GeoGebra 動畫開關按鈕製作的副本
Discover Topics
Complex Numbers
Trigonometric Functions
Differential Equation
Root
Hyperbola