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Rolling Circle
Author:
Roger Lui
GeoGebra
New Resources
三位數除以一位數（一）
異分母分數減法
拼砌四邊形
兩組對邊相等的四邊形
四邊形的特性
Discover Resources
文氏圖
三角形外角和=360⁰
四邊形的特性
slide
同位角
Discover Topics
Area
Continuity
Straight Lines
Secant Line or Secant
Fractal Geometry