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Similar triangles inscribed iteration
Author:
DongHai Zhang
New Resources
畫出對稱圖形
異分母分數減法
判斷球體
算柱 (兩位數)
【案例】2018年全国1卷理科12题
Discover Resources
Locus 軌跡(4T)
包含除法（整數或分數 ÷ 分數）
向量求和动画演示
構作對稱圖形
酷狗音乐
Discover Topics
Upper and Lower Sum or Riemann Sum
Hyperbola
Median Value
Combinatorics
Centroid or Barycenter
