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他們共吃了蛋糕
Author:
Cobie Lo
GeoGebra
New Resources
异形操场
正方形雪花图案
撒针估算面积实验
斐波那契螺旋弧线（表格法）
第三周作业效果演示
Discover Resources
Slope of a St. Line (formula)
Integer
拋物線5-包絡線法
雙曲線3--等軸法
Sunrays with different angles
Discover Topics
Matrices
Tangent Line or Tangent
Surface
Straight Lines
Definite Integral