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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
算柱 (兩位數)
【案例】2013年安徽高考15题
四邉形 (四年級) 教師版
兩位數除以一位數（一）
第八周作业
Discover Resources
Reflectional Symmetry 反射對稱
題八
ie 7
正多角柱(可輸入底面邊數)
congruent (AAA)