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椭圆内切圆链

Author:孟宝兴

New Resources

  • 近似值:有效數字
  • 美國國旗 (Codex 版)
  • 兩組對邊相等和有直角的四邊形
  • 算柱 (兩位數)
  • 四邊形的特性

Discover Resources

  • 能量守恆
  • 相同圖形的拼砌(有兩組平行線的四邊形)
  • 纏繞圖-五邊形
  • 折纸成抛物线
  • 華容道Klotski Puzzle-一橫四豎(三國版)

Discover Topics

  • Subtraction
  • Matrices
  • Tangent Line or Tangent
  • Ellipse
  • Perimeter
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