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Author:
Leung Yeeling
GeoGebra
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平行線的斜率
正方形雪花图案
圓的切線方程
常见四边形是否是双心四边形
垂直線的斜率
Discover Resources
Add and subtract (binary)
正方形
正多面體
畢氏定理(等面積變形法)
圓形重疊問題
Discover Topics
Equilateral Triangles
Pythagoras or Pythagorean Theorem
Cosine
Linear Equations
Optimization Problems