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随机三角形背景
Author:
孟宝兴
GeoGebra
New Resources
畫出對稱圖形
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
拼砌四邊形
三位數除以一位數（二）
Discover Resources
廣義量角器
二元一次方程式 1
Percentage Change(百分變化)
不規則圖形的周界(F)
纏繞畫
Discover Topics
Logarithmic Functions
Subtraction
Constructions
Parabola
Plane Figures or Shapes