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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
四邊形的特性
拼砌四邊形
兩組對邊相等和有直角的四邊形
【案例】2013年安徽高考15题
判斷球體
Discover Resources
根據百分率找數量（一）: 例4
愛上貝氏曲線 (Love for Bezier)
squence
Magic Matches
第一个绘本
Discover Topics
Intersection
Incircle or Inscribed Circle
Sequences and Series
Polygons
Quadratic Functions