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三角形面積與內切圓半徑
Author:
李春培
三角形面積與內切圓半徑
GeoGebra
New Resources
找出對稱軸
兩位數除以一位數（一）
球体的体积推导
畫出對稱圖形
GeoGebra笔记功能体验课件
Discover Resources
函數切線及法線
Where is Micky?
等邊三角形
平行線法
地球儀繪製
Discover Topics
Correlation
Pythagoras or Pythagorean Theorem
Incircle or Inscribed Circle
Exponent
Constructions