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Properties of a Square
Author:
Lttcmooc
GeoGebra
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兩位數加法
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
畫出對稱圖形
三位數除以一位數（二）
Discover Resources
橢圓的軌跡
釘點紙畫三角形
正方形中點連線及分角線交點連線形狀
多重刻度磅
基础知识
Discover Topics
Distributions
Boxplot
Means
Kite
Difference and Slope