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perimeter

Author:Yvonne Fung, GeoGebra Institute of Hong Kong

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國旗 (作圖步驟直接餵給 Claude)
近似值：有效數字
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
Nested spiral octagon

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三下_三角形(學生版)
HKCEE 2010 Q15
The change in SD after adding a constant
earth
小船平移2

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Parametric Curves
Quadratic Functions
Sine
Linear Equations
Similarity Transformation or Similarity

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