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旋轉正方形
Author:
33陳郁婷
GeoGebra
New Resources
拼砌四邊形
異分母分數減法
三位數除以一位數（二）
兩組對邊相等的四邊形
兩位數除以一位數（一）
Discover Resources
三下_三角形( 教師版)
阿基米德雙胞胎圓
Locus指令的練習
invariance interval
爱心
Discover Topics
Differential Calculus
Root
Standard Deviation
Interest Calculation
Incircle or Inscribed Circle