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任意三角形兩不等圓v3
Author:
Lin Ching Chieh
GeoGebra
New Resources
拼砌四邊形
兩位數加法
三位數除以一位數（一）
異分母分數減法
第八周作业
Discover Resources
GGB風雲榜
分數的認識
小五面積
迭代多边形;平移;向量
数矩形个数
Discover Topics
Trapezoid
Logarithmic Functions
Fractions
Incircle or Inscribed Circle
Parametric Curves