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餘弦定理
Author:
yuchengda
GeoGebra
New Resources
畫出對稱圖形
小数 的副本
兩位數加法
兩位數除以一位數（一）
sanjiaohanshu
Discover Resources
中心对称和中心对称图形
S5 chauyy
三角形外心
圈圈移動
Tangent of circle
Discover Topics
Trigonometry
Statistics
Solids or 3D Shapes
Logic
Interest Calculation