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圓面積
Author:
康靖坤
GeoGebra
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异形操场
科赫雪花
第八周作业3
三角函数 的副本
撒针估算面积实验
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反正切函數
練習 - 反射對稱
HKCEE 2010 Q15
directed number_hot air balloon
面積的認識4
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Equilateral Triangles
Geometric Distribution
Parabola
Constructions
Division