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正4正8黏合v2
Author:
Wu Xiao-Ren
GeoGebra
New Resources
畫出對稱圖形
異分母分數減法
画直线等分三角形的面积
判斷球體
三位數除以一位數（一）
Discover Resources
線性組合3：正方形
練習1
三线八角
congruent (SSS)
探究三角形的全等條件
Discover Topics
Bar Chart or Bar Graph
Set Theory
Hypothesis Testing
Special Points
Ratios