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有理數加減法練習
Author:
fong ka ngai
GeoGebra
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兩位數除以一位數（一）
【案例】2013年安徽高考15题
兩組對邊相等的四邊形
兩位數除以一位數（二）
兩位數加法
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Escher 階梯 (Penrose Stair)
sine graph 變換
Apollonius Problem 5 CPP pocelet
第八周作业2
兩位數加法
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Trigonometry
Terms
Equilateral Triangles
Secant Line or Secant
Probability