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gmj106a12 旋轉矩陣與面積
Author:
均一
GeoGebra
New Resources
錐體建築師
兩組對邊相等的四邊形
画直线等分三角形的面积
拼砌四邊形
兩位數除以一位數（一）
Discover Resources
正三角形的旋轉
正四面體
三角形外心
Testing
圆的有关概念
Discover Topics
Matrices
Similarity Transformation or Similarity
Derivative
Rhombus
Special Points
