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賺賠：例2
Author:
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
拼砌四邊形
四邊形的特性
異分母分數減法
兩位數加法
兩位數除以一位數（一）
Discover Resources
Time
同學最喜愛的運動
七角柱(可側轉、上下轉)
小题狂做P60No2
颜畅和完成的图像1
Discover Topics
Hypothesis Testing
Histogram
Tangent Line or Tangent
Kite
Orthocenter