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先估算，後看解釋
Author:
Tse Sir
先估算，後看解釋
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兩組對邊相等和有直角的四邊形
拼砌四邊形
兩組對邊相等的四邊形
錐體建築師
畫出對稱圖形
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test geoebra1
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max_error
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乘加挑戰題
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Scatter Plot
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