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割圓術
Author:
maths.ephhk
GeoGebra
New Resources
異分母分數減法
兩組對邊相等和有直角的四邊形
球體建築師
拼砌四邊形
兩位數除以一位數（一）
Discover Resources
n星角
triangle
sin, cos, tan 圖像
重心
對稱圖形
Discover Topics
Expected Value
Circle
Variance
Solids or 3D Shapes
Quadrilaterals