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拼貼3
Author:
李伶芳
GeoGebra
New Resources
第八周作业
拼砌四邊形
近似值：有效數字
Earth with coastline
美國國旗 (Codex 版)
Discover Resources
CACTM對稱及變換
分數乘法
向外延伸的多邊形
过一直线与已知直线相交
斐波那契螺旋弧线（表格法-可动态调节）
Discover Topics
Rational Numbers
Rectangle
Conditional Probability
Incircle or Inscribed Circle
Median Line