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Copy of 周界
Author:
kristinaliu1357
,
spkwan
GeoGebra
modified by spkwan, uploaded 16 October 2011
GeoGebra
New Resources
三位數除以一位數（二）
異分母分數減法
錐體建築師
三位數除以一位數（一）
找出對稱軸
Discover Resources
正方形與正三角形
Quiz on Mixed Arithmetic Operations of Positive Integers 正整數四則混合運算：測驗
二次函數圖形與兩軸的交點
directed number_the age of father and son
包絡橢圓
Discover Topics
Intersection
Line Segment
Congruence
Pythagoras or Pythagorean Theorem
Circle