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反餘弦函數
Author:
chungYT
GeoGebra
New Resources
小数 的副本
畫出對稱圖形
找出對稱軸
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
Discover Resources
正方體的反射對稱2
轴对称
畢氏定理學生(楊知樾)
不規則圖形的周界(intro Square)
九九乘法表 - Multiplication Table的副本
Discover Topics
Root
Arithmetic Mean
Derivative
Polynomial Functions
Pythagoras or Pythagorean Theorem