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fchengang函数变换1
Author:
符成岗
GeoGebra
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平行線的判定
常见四边形是否是双心四边形
斐波那契螺旋弧线(表格法)
椭圆内切圆链
撒针估算面积实验
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拼出三角形
因數的判別
費爾巴哈(Feuerbach)定理
畢氏定理的副本
一次函数的副本
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Upper and Lower Sum or Riemann Sum
Probability
Differential Calculus
Cube
Fractions