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All in one (centres of triangle)
Author:
Big Lee
GeoGebra
New Resources
畫出對稱圖形
画直线等分三角形的面积
柱體建築師
【案例】2013年安徽高考15题
拼砌四邊形
Discover Resources
橫斷式研究之樣本數估計（Outcome為odds ratio）
正方形和等邊三角形轉化_李樂雯
barara magic stick
用GGB制作奔驰轮胎.许兴华数学
频率与概率——投掷硬币的试验
Discover Topics
Hypergeometric Distribution
Inequalities
Rational Numbers
Parallelogram
Linear Programming or Linear Optimization