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長方形
Author:
Yip Chi Wai
GeoGebra
New Resources
兩位數除以一位數（二）
四邊形的特性
四邉形 (四年級) 教師版
拼砌四邊形
畫出對稱圖形
Discover Resources
荒島尋寶
製作組織圖
congruent (SSS)
Choose the most suitable 'improvised units'(中間人)
pythLK
Discover Topics
Cube
Cuboid
Complex Numbers
Kite
Boxplot