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三垂線

Author:Wu Xiao-Ren

New Resources

  • 畫出對稱圖形
  • 找出對稱軸
  • 判斷球體
  • 【案例】2018年全国1卷理科12题
  • 異分母分數減法

Discover Resources

  • 五邊形與三角形等積
  • 怪函數之3
  • 动圆在定圆上滚动
  • Tangent perpendicular to radius
  • 初二春季课程

Discover Topics

  • Expected Value
  • Vectors
  • Inequalities
  • Combinatorics
  • Linear Functions
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