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zgc112
GeoGebra
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中华人民共和国国旗
百分數及其應用
椭圆内切圆链
盈利與虧蝕
龙形曲线-分形龙
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作業 11032
探究余弦定理
Cross Product for 2D Vectors (平面外積)
拋物線1-焦點法
和两个圆都相切的圆
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Quadrilaterals
Fractions
Arithmetic Operations
Constructions
Inequalities