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Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.geogebra.hk
New Resources
判斷球體
Nested spiral octagon
近似值：有效數字
兩組對邊相等的四邊形
美國國旗 (Codex 版)
Discover Resources
task 7
大園寶
周长相等，正方形，长方形和正三角形，圆面积大小比较
平分线段或角
完全图及其变形
Discover Topics
Tree Diagrams
Interest Calculation
Integers
Linear Regression
Fractions