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固定面積的圖形周界變化

Author:phcheng, GeoGebra Institute of Hong Kong

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算柱 (兩位數)
兩位數除以一位數（一）
兩位數加法
球體建築師
柱體建築師

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梯形(面積)
線段與圓弧所構成的封閉區域之填色問題
遞迴
中国节灯笼
翰林數學_2下_CH3-4_三角形的邊長關係

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Boxplot
Fractions
Ellipse
Scalene Triangles
Fractal Geometry

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