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Quiz on Interest 利息：測驗
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
畫出對稱圖形
四邉形 (四年級) 教師版
找出對稱軸
画直线等分三角形的面积
柱體建築師
Discover Resources
Construct a regular pentagon
邊長與三角形（二）
梯形的面積
線性組合1：正六邊形
正切线生成函数图像
Discover Topics
Set Theory
Sine
Standard Deviation
Cube
Similarity Transformation or Similarity