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四角形の各辺の中点を結ぶと?

Author:小山英憲

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  • sine-wave
  • standingwave-plus
  • 二次曲線と離心率
  • 等積変形2
  • 平均変化率

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  • 等比級数の和
  • エッシャーのように3(正六角形)
  • 円の接線と極線
  • 白銀比・黄金比
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Discover Topics

  • Division
  • Solids or 3D Shapes
  • Tree Diagrams
  • Similarity Transformation or Similarity
  • Quadrilaterals
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