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厚會聚透鏡 Thick Convergent Lens
Author:
W.L. Wong, Albert
GeoGebra
New Resources
【案例】2013年安徽高考15题
兩組對邊相等的四邊形
異分母分數減法
兩位數除以一位數（二）
算柱 (兩位數)
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圓繞圓
log and power funtion
因式分解二次方程
多邊形面積探究1
正态函数曲线的特点
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Combinatorics
Incircle or Inscribed Circle
Translation
Polygons
Vectors 3D (Three-Dimensional)