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餘弦定理
Author:
yuchengda
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
異分母分數減法
兩位數加法
兩位數除以一位數（二）
拼砌四邊形
Discover Resources
擴分和約分
縫衣針
立體三角測量(例六)
探究余弦定理
展開圓面積 (講義版)的副本
Discover Topics
Scatter Plot
Plane Figures or Shapes
Indefinite Integral
Line Segment
Geometric Distribution