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百葉窗2
Author:
李春培
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
三位數除以一位數（二）
拼砌四邊形
畫出對稱圖形
Discover Resources
正方形和長方形有甚麼特性？
TEST
Similar triangles reasons
circle
範例一
Discover Topics
Unit Circle
Hypergeometric Distribution
Isosceles Triangles
Natural Numbers
Rotation