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天干與地支
Author:
李春培
GeoGebra
New Resources
畫出對稱圖形
找出對稱軸
【案例】2018年全国1卷理科12题
三位數除以一位數（二）
四邊形的特性
Discover Resources
九點圓
正弦公式(證明)
題六
正圆台展开图
抛豆实验
Discover Topics
Vectors 2D (Two-Dimensional)
Arithmetic Mean
Distributions
Symmetry
Function Graph