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光的折射
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学用数学
GeoGebra
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判斷球體
兩組對邊相等的四邊形
拼砌四邊形
兩位數除以一位數（二）
兩位數除以一位數（一）
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幾何分布 (Geometric Distribution)
扇形的弧長與面積
Verification of Pythagoras Theorem 驗証畢氏定理
學測104-D
ghseh 二次函數描點法左右平移-5
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Intersection
Logarithm
Means
Angles
Translation