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月球地球公轉立體圖(大小並不合比例)
Author:
ricky
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
畫出對稱圖形
兩位數加法
三位數除以一位數（二）
兩組對邊相等的四邊形
Discover Resources
动态展示圆面积的构成
加法
n星角
爱心
平行四边形变形
Discover Topics
Area
Parallelogram
LCM and GCD
Triangles
Statistics