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三角形的三线
Author:
Xiaoting Yuan
Topic:
Triangles
GeoGebra
New Resources
畫出對稱圖形
異分母分數減法
柱體建築師
小数 的副本
兩位數除以一位數（一）
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畫三角形 題1a
-(√3/2)³ ≤ sinα sinβ sinγ ≤ (√3/2)³
Copy of 畢式定理 (06)
六邊形
正方形纸片剪出正三角形（顶点在边上）
Discover Topics
Histogram
Right Triangles
Differential Equation
Vectors
Secant Line or Secant