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4M1 周界 多邊圖形的周界 20171024
Author:
makkei
GeoGebra
New Resources
球體建築師
兩位數加法
近似值：有效數字
異分母分數減法
三位數除以一位數（一）
Discover Resources
平移旋轉
trigo ratios np2c
小學
等邊三角形
一个周期内的正弦曲线
Discover Topics
Arithmetic Mean
Rectangle
Hypergeometric Distribution
Interest Calculation
Curve Sketching