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Author:
Hui Sir
GeoGebra
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四邊形的特性
第八周作业
三位數除以一位數(一)
三位數除以一位數(二)
畫出對稱圖形
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[問題] a² + b² = 1, (c-4)² + (d-2)² = 5,求 ad - bc 最大值?
五位數
四角錐體的截面
七巧板綜合的副本
探索黎曼和
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Sequences and Series
Integers
Orthocenter
Inequalities
Means