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CS-13-7
Author:
Jiezhe Wang
GeoGebra
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撒针估算面积实验
异形操场
正方形雪花图案
第八周作业
斐波那契螺旋弧线（表格法-可动态调节）
Discover Resources
部分佔全部的百分率 :例2
圓&五邊形
cube
Copy of gjc091b18 圓的割線
對數函數
Discover Topics
Ellipse
Linear Functions
Geometry
Vectors
Sine