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2048小游戏
Author:
孟宝兴
GeoGebra
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拼砌四邊形
兩組對邊相等的四邊形
兩位數除以一位數（一）
四邊形的特性
算柱 (兩位數)
Discover Resources
坐標幾何
拋物面光學性質
Hamid Naderi Yeganeh segment3
加減乘除运算 出题器【有数字键盘】
HKCEE 2010 Q15
Discover Topics
Median Line
Dilation
Calculus
Variance
General Quadrilateral