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Copy of 三角形的面積

Author:cs_cmb, Anthony OR 柯志明

柯志明香港 GeoGebra 學院

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兩組對邊相等和有直角的四邊形
近似值：有效數字
畫出對稱圖形
國旗 (Claude 版)
sanjiaohanshu

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Symmetric設計對稱圖案(兩條對稱軸)(斜)
雙曲線的定義
立體圖
Copy of 賺賠：例1
長方形的周界與長和闊的關係 (教師版)

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Arithmetic Operations
Arithmetic Mean
Trapezoid
Vectors 3D (Three-Dimensional)
Integral Calculus

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