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切割任意四邊形再拼砌成矩形
Author:
ho ting chit
GeoGebra
New Resources
兩位數加法
找出對稱軸
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
三位數除以一位數（一）
Discover Resources
final report
Perpendicular lines
周界-平移法(練習四)
Template: 對稱01
伸縮變換的副本
Discover Topics
Ellipse
Kite
Algebra
Probability
Power Functions