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全等—正方形的旋转
Author:
詹凯
Topic:
Congruence
,
Triangles
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數加法
三位數除以一位數（二）
畫出對稱圖形
異分母分數減法
Discover Resources
平均線
二次函数动点问题25
七巧板的副本
直方圖_Demo的副本
少了一個質數One less prime number
Discover Topics
Stochastic Process or Random Process
Natural Numbers
Hypothesis Testing
Tangent Function
Integers