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φ的影响
Author:
军云
GeoGebra
New Resources
兩位數加法
三位數除以一位數（二）
GeoGebra笔记功能体验课件
找出對稱軸
畫出對稱圖形
Discover Resources
正立方體中的正四面體
mearm機械手臂模擬
真方位角與羅盤方位角
蝴蝶定理推廣證明1
qid_39321
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Special Points
Subtraction
Geometric Transformations
Quadratic Functions
Centroid or Barycenter