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商高定理之正三角形2
Author:
李春培
商高定理之正三角形2
GeoGebra
New Resources
畫出對稱圖形
球体的体积推导
兩組對邊相等的四邊形
判斷球體
兩位數除以一位數（一）
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Clock
塗鴉
複合圖形(四)
配方法 Completing the Square
正弦曲线的生成
Discover Topics
Similar Triangles
Volume
Subtraction
Differential Calculus
Sine