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時鐘問題
Author:
連琨銘
GeoGebra
New Resources
算柱 (兩位數)
異分母分數減法
兩位數除以一位數（二）
画直线等分三角形的面积
球體建築師
Discover Resources
三角形及多邊形
y=a*tan(b*x)
三角函數角度轉換
圆内接与圆外切多边形
线面g
Discover Topics
Parallelogram
Difference and Slope
Reflection
Congruence
Cuboid