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梯形有甚麼特性？
Author:
Anthony OR 柯志明
English version:
http://ggbtu.be/m79855
GeoGebra
New Resources
漂亮的摇摆曲线
第八周作业
【案例】2013年安徽高考15题
祖冲之的期望：内棋与外棋
直線的斜率
Discover Resources
waaachen
軌跡圖
正方体展开图的副本
开关灯游戏
贪吃蛇小游戏
Discover Topics
Trigonometric Functions
Congruence
Interest Calculation
Derivative
Straight Lines