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happy birthday

Author:李春培
happy birthday

New Resources

  • 兩位數加法
  • 找出對稱軸
  • 四邊形的特性
  • 【案例】圆柱体内放置一个大球六个小球
  • 【案例】2018年全国1卷理科12题

Discover Resources

  • 畢氏定理完成20170330
  • 題二
  • 拋物線1-焦點法
  • 圆锥曲线的产生
  • 正三角形在长方形边上移动加滚动

Discover Topics

  • Fractal Geometry
  • Median Value
  • Ellipse
  • Vectors 2D (Two-Dimensional)
  • Similar Triangles
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