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a 回転長方形

Author:tomjhs

New Resources

  • 等積変形2
  • 小テスト
  • 接点の作る円は内接円
  • 正17角形 作図 regular 17-gon
  • standingwave-plus

Discover Resources

  • 内心→垂心→外心
  • 内心
  • 立方体断面図正三角形1
  • 内心(図形の性質) のコピー
  • カフェウォール錯視

Discover Topics

  • Centroid or Barycenter
  • Square
  • Incircle or Inscribed Circle
  • Terms
  • Set Theory
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