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六上：圆的面积公式推导
Author:
钟秀群
Topic:
Circle
GeoGebra
New Resources
畫出對稱圖形
四邉形 (四年級) 教師版
球体的体积推导
四邊形的特性
兩組對邊相等的四邊形
Discover Resources
angle between lines
正多邊形柱體表面積展開圖
進出刀量測-圓形
對稱圖形
橢圓(上下型)標準式
Discover Topics
Subtraction
Fractal Geometry
Power Functions
Distributions
Arithmetic Mean