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不規則區域著色
Author:
arthurshih
GeoGebra
New Resources
拼砌四邊形
找出對稱軸
三位數除以一位數（二）
畫出對稱圖形
柱體建築師
Discover Resources
(正)長方體
千年曆
繪製平行四邊形
Ex5C#15
牛頓法 (Newton's Method)的副本