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Author:: lamanleung

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直角三角形的內心與相似
滚动的正四面体
办理新西兰毕业证扣/薇374936141学历认证留信网认证，使馆认证，回国人员证明
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宋小喵第8个作品

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總結
ie 4
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均分除法（整數÷整數）
办理瑞典毕业证扣/薇374936141学历认证留信网认证，使馆认证，回国人员证明

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Quadratic Functions
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