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Author:
李擎阳
GeoGebra
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盈利與虧蝕
折扣
龙形曲线-分形龙
异形操场
中华人民共和国国旗
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Quiz on Addition and Subtraction of Directed Numbers (2) 有向數加減測驗(2)
CK雋翔的GGB BOOK
圖D
ghseh 二次函數描點法左右平移-5
CIRCLE
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Triangles
Quadrilaterals
Boxplot
Fractions
Limits