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两角和的正切公式几何证明

Author:桃篮翁

New Resources

  • 找出對稱軸
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  • Task 5: Regular Hexagon
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  • 西姆松定理推廣(西姆松圓)
  • 平行四邊形
  • 平行四边形平移

Discover Topics

  • Secant Line or Secant
  • Incircle or Inscribed Circle
  • Geometric Distribution
  • Circumcircle or Circumscribed Circle
  • Dilation
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