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parallelogram and squares
Author:
johnmayhk
GeoGebra
New Resources
四邊形的特性
兩組對邊相等的四邊形
兩位數除以一位數（一）
画直线等分三角形的面积
異分母分數減法
Discover Resources
try_111
三角形及多邊形
Catenoid
軌跡觀察---兩圓上線段中點
重心
Discover Topics
Tangent Line or Tangent
Probability
Similarity Transformation or Similarity
Boxplot
Random Variables