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GeoGebra
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Author:
葉千岱
GeoGebra
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畫出對稱圖形
四邊形的特性
画直线等分三角形的面积
兩位數加法
拼砌四邊形
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test test test
例題6
Area of triangle with different base
線性組合性質
GGB新手季作业汇总
Discover Topics
Derivative
Diagrams
Curve Sketching
Multiplication
Upper and Lower Sum or Riemann Sum