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Quiz on Centres of Triangles 三角形的中心：測驗
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.gmath.hk
New Resources
三位數除以一位數（二）
小数 的副本
兩位數加法
【案例】2018年全国1卷理科12题
算柱 (兩位數)
Discover Resources
Copy of 固定周界的長方形的面積變化
正六邊形串珠
anlge at centre twice angle at circumference
摺長方形
滑桿2
Discover Topics
Scalene Triangles
Statistics
LCM and GCD
Centroid or Barycenter
Mathematics