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Comparing fractions using number lines and rectangles
Author:
Eva Lai
GeoGebra
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兩組對邊相等的四邊形
四邊形的特性
【案例】2013年安徽高考15题
拼砌四邊形
直角坐標平面上的旋轉變換
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相似形基本圖形
Testing
牛頓法 (Newton's Method)
三角恒等式證明
超快國旗
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Logic
Complex Numbers
Integral Calculus
Incircle or Inscribed Circle
Perimeter