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長方形
Author:
Yip Chi Wai
GeoGebra
New Resources
畫出對稱圖形
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
算柱 (兩位數)
四邉形 (四年級) 教師版
Discover Resources
平行四邊形有甚麼特性？
仿生獸
利用對摺找內心
愛心
數值滑桿_長方形2
Discover Topics
Parallelogram
Terms
Volume
LCM and GCD
Linear Regression