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sine law and triangle
Author:
Sam
GeoGebra
New Resources
比較五件物件的重量
双心四边形
斐波那契螺旋弧线（表格法-可动态调节）
龙形曲线-分形龙
平行線的判定
Discover Resources
真分數相乘
中三 樹形圖
模擬圓規
Copy of 劉徽的「割圓術」
伞骨架模型
Discover Topics
Cube
Solids or 3D Shapes
Differential Calculus
Surface
Pythagoras or Pythagorean Theorem