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極坐標
Author:
yuchengda
GeoGebra
New Resources
球體建築師
找出對稱軸
三位數除以一位數（二）
異分母分數減法
兩組對邊相等和有直角的四邊形
Discover Resources
ggbbook1
香港貨幣
Distance(距離公式)
題 1
圆的面积展开的副本
Discover Topics
Planes
Division
Fractal Geometry
Dilation
Geometry