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正十二面體內接正四面體或內接正六面體

Author:侯杰材

New Resources

  • 四邉形 (四年級) 教師版
  • 拼砌四邊形
  • 【案例】圆柱体内放置一个大球六个小球
  • 異分母分數減法
  • 找出對稱軸

Discover Resources

  • 正n邊形的組合
  • Congruent and Similarity
  • 图中的三角形面积何时最小?(许兴华数学)
  • 小正多边形在大正多边形内的滚动(边长不相等)
  • 斐波那契螺旋弧线(表格法)

Discover Topics

  • Curve Sketching
  • Similar Triangles
  • Quadratic Equations
  • Power Functions
  • Orthocenter
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