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三角形面積
Author:
鍾文欽
GeoGebra
New Resources
算柱 (兩位數)
找出對稱軸
三位數除以一位數（一）
畫出對稱圖形
異分母分數減法
Discover Resources
圆的面积展开
量角器1
推移矩陣（x 方向）
Space-filling curve2
z=g(x,y)函数图像
Discover Topics
Rotation
Plane Figures or Shapes
Polynomial Functions
Hypothesis Testing
Inequalities