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Multiplication of Directed Numbers
Author:
chisunch1
GeoGebra
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四邊形的特性
找出對稱軸
【案例】2018年全国1卷理科12题
兩位數加法
兩位數除以一位數（二）
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任意兩正方形切割重組成一大正方形之動態證明
Redefining Trigonometry by a Unit Circle
Locus: Fixed Distance From Straight Line
【2020高考】全国1卷 第3题
求直角三角形的斜邊
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Centroid or Barycenter
Root
Addition
Limits
Arithmetic