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【立体字】5.1 劳动节快乐
Author:
孟宝兴
GeoGebra
New Resources
異分母分數減法
四邊形的特性
兩組對邊相等的四邊形
兩位數除以一位數（二）
畫出對稱圖形
Discover Resources
弦的中點軌跡
方格紙上畫正方形2
Add and subtract 2
測試中
兩組對邊相等和有直角的四邊形
Discover Topics
Surface
Perimeter
Quadratic Equations
Straight Lines
Volume