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科學記號
Author:
李春培
GeoGebra
New Resources
兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
畫出對稱圖形
四邊形的特性
三位數除以一位數（二）
Discover Resources
內心
clock
Copy of 平行四邊形面積
分数应用题数量关系线段图示
西图对
Discover Topics
Special Points
Similarity Transformation or Similarity
Arithmetic Operations
Area
Fractions