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平行四邊形面積

Author:羅驥韡 (Pegasus Roe)

New Resources

  • sanjiaohanshu
  • 四邊形的特性
  • 四邉形 (四年級) 教師版
  • 算柱 (兩位數)
  • 兩位數除以一位數(二)

Discover Resources

  • 呼拉圈
  • 平移動畫(平移加滑桿)
  • circle
  • 三圓外切2
  • Bisects Chord
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