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Author:
Renxiaoli
GeoGebra
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圓的切線方程
【案例】2013年安徽高考15题
漂亮的摇摆曲线
探究三角形的全等條件
多邊形的面積
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龍騰4_1-1課例4
parallelogram and squares
Copy of 三角形的面積
數學電腦繪圖與解題
max_error
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Similar Triangles
Coordinates
Translation
Upper and Lower Sum or Riemann Sum
Reflection