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Circumference 圓周
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
找出對稱軸
兩位數除以一位數（二）
三位數除以一位數（二）
畫出對稱圖形
兩組對邊相等的四邊形
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數字組合
Copy of 固定周界的長方形的面積變化
x^3=log_a|x|
congruent triangle2_provided by Mr Yeung Kar Chun
拋物線6--包絡線法
Discover Topics
Rectangle
Combinatorics
Functions
Multiplication
Root