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Author:
Nickie Chen
GeoGebra
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盈利與虧蝕
第八周作业3
圓的基本性質
撒针估算面积实验
龙形曲线-分形龙2
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I love you
未完成的版本
椭圆画法wj
圓錐曲線截痕 to 定義式
圓周_心算題02
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General Quadrilateral
Percentages
Statistics
Circle
Cone