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拋物面的光學性質
Author:
宋政蒲
GeoGebra
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兩位數加法
畫出對稱圖形
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
球體建築師
Discover Resources
生活中的平面圖形關係─全等
斜率
Parabola_Vertical
动感数学
y=sinx描點
Discover Topics
Combinatorics
Translation
Parametric Curves
Triangles
Parallelogram