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Perimeter

Author:Ting Chui Yee, Anthony OR 柯志明, Angela Yan

New Resources

  • 拼砌四邊形
  • 找出對稱軸
  • 算柱 (兩位數)
  • 四邉形 (四年級) 教師版
  • 美國國旗 (Codex 版)

Discover Resources

  • 三角形內切三圓
  • test file
  • 立方和
  • 橢圓
  • 正多邊形各邊中點連線所圍成的圖形

Discover Topics

  • Numbers
  • Conic Sections
  • Rhombus
  • Cosine
  • Ellipse
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