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30度直角三角形

Author:郭勇

New Resources

  • 算柱 (兩位數)
  • 找出對稱軸
  • 四邉形 (四年級) 教師版
  • 異分母分數減法
  • 球体的体积推导(优化版)

Discover Resources

  • 平行與角度
  • [問題] x² + 2xy + y² + 5x + ay + b > 0
  • 空間中的平面
  • 組織圖、頻數多邊形
  • 正四角錐

Discover Topics

  • Exponent
  • Congruence
  • Sequences and Series
  • Logarithm
  • Random Variables
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