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解三角形（１）
Author:
蔡永志
Topic:
Triangles
,
Trigonometry
解三角形
GeoGebra
New Resources
畫出對稱圖形
柱體建築師
異分母分數減法
兩位數除以一位數（一）
兩位數除以一位數（二）
Discover Resources
斯坦納-雷米歐司(Steiner-Lehmus)定理證明三
semicircle
畢氏定理完成20170330
等弧對等角
描点法画函数图像
Discover Topics
Parametric Curves
Circumcircle or Circumscribed Circle
Centroid or Barycenter
Rectangle
Probability