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封閉區域著色
Author:
Ching-Hui Chou
GeoGebra
New Resources
兩位數加法
四邊形的特性
兩位數除以一位數（二）
兩位數除以一位數（一）
異分母分數減法
Discover Resources
用心包裝的禮物
平行四邊形變奏II
弦心距垂直平分弦
旋轉方塊
翰林數學_2下_CH4-2_特殊平行四邊形有關對角線的性質
Discover Topics
Boxplot
Inequalities
Rotation
Algebra
Linear Programming or Linear Optimization