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Author:
刘恒绪
GeoGebra
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画直线等分三角形的面积
【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
找出對稱軸
異分母分數減法
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圓內接四邊形 ABCD ...，求 sinθ=?
優良作品3(昀潔)
Euler Line 1
Classifying Quadrilaterals
分段函数和旋转曲面
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Integral Calculus
Reflection
Centroid or Barycenter
Multiplication
Surface