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Author:
吴辉
阿斯蒂芬
GeoGebra
阿斯蒂芬
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垂直線的斜率
斜率的值
多邊形的面積
探究三角形的全等條件
圓的切線方程
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外心
方格紙上畫梯形2
Quiz on Addition and Subtraction of Directed Numbers (1) 有向數加減測驗(1)
呵呵
加法(10一數的副本
Discover Topics
Tangent Line or Tangent
Sine
Fractions
Surface
Algebra