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trigonometry
Author:
jarypig1983
GeoGebra
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兩位數除以一位數（一）
找出對稱軸
画直线等分三角形的面积
【案例】2013年安徽高考15题
GeoGebra笔记功能体验课件
Discover Resources
Erdos-Mordell 不等式
四角柱(底面為可調整梯形)
選修數學
五棱柱
四邉形 (四年級) 教師版
Discover Topics
Inequalities
Trigonometric Functions
Definite Integral
Incircle or Inscribed Circle
Symmetry