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滑桿動畫
Author:
劉軒宏
GeoGebra
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兩組對邊相等和有直角的四邊形
拼砌四邊形
兩位數除以一位數（二）
兩位數加法
畫出對稱圖形
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對稱方波
圆锥曲线的第二定义
外心
Similar Figures (QMSS)
圆锥曲线的统一画法.许兴华数学
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Means
Isosceles Triangles
Planes
Distributions
Definite Integral