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fcg周期变换
Author:
符成岗
GeoGebra
New Resources
常见四边形是否是双心四边形
第八周作业1
第八周作业2
圓的基本性質
直線的斜率：水平變化 & 鉛垂變化
Discover Resources
把三角形分類
排列組合
向量的伸縮
Copy of 韻01
五複合正六面體
Discover Topics
Upper and Lower Sum or Riemann Sum
Power Functions
Division
Scalene Triangles
Derivative