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GeoGebra
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Author:
羅驥韡 (Pegasus Roe)
GeoGebra
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兩位數加法
近似值：有效數字
算柱 (兩位數)
拼砌四邊形
四邊形的特性
Discover Resources
I love you
三角形外角和
圓形單獨滑動
長方形面積法 _單項式乘法
连续半圆上的动点运动规律
Discover Topics
Equations
Plane Figures or Shapes
Cylinder
Parabola
Quadratic Equations