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Author:LAM YU SANG

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兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
拼砌四邊形
四邊形的特性
sanjiaohanshu

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四則運算
判斷錐體 1
張春興0302
圓外角測試
圓的面積的副本

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Trigonometry
Variance
Step Functions
Pythagoras or Pythagorean Theorem
Fractions

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