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Author:李政憲

New Resources

  • 兩組對邊相等的四邊形
  • 算柱 (兩位數)
  • 異分母分數減法
  • 三位數除以一位數(二)
  • 球體建築師

Discover Resources

  • 三角函數with sine, cosine圖形
  • 數學傳播39卷4期, 平面幾何公式思考
  • 切割正二十面體
  • 正十二面體裁邊 (Chamfered Dodecahedron)
  • 动圆与两圆外切与内切(2)

Discover Topics

  • Similar Triangles
  • Multiplication
  • Indefinite Integral
  • Coordinates
  • Polygons
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