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GGB報告01
Author:
Wolil Io
GeoGebra
New Resources
直線的斜率：水平變化 & 鉛垂變化
折扣
正方形雪花图案
平行線的判定
斐波那契螺旋弧线（表格法-可动态调节）
Discover Resources
橢圓
CircleRoundCircle
光的折射（光线自右下向左上）
Shoplifting and theft histogram
旋轉菱形
Discover Topics
Orthocenter
Centroid or Barycenter
Triangles
Cuboid
Special Points