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外心
Author:
Bennie Liu
GeoGebra
New Resources
兩位數除以一位數（一）
畫出對稱圖形
柱體建築師
GeoGebra笔记功能体验课件
兩組對邊相等的四邊形
Discover Resources
正六面體
相同圖形的拼砌（三角形）
DSE Circle-ACT03B Relationship Between Chords and Angles at Centre
光的反射
夾擠定理 (The Squeeze Theorem)
Discover Topics
Percentages
Normal Distribution
Special Points
Incircle or Inscribed Circle
Median Line