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GeoGebra
磁磚著色
Author:
311016
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possion
三角函数求值 （单位圆、比值）
日照与影长
變異數
日照、影長變換
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test file
扇形概念與面積
glt-h02-05-圓錐展開
圓上圓
等腰直角三角形与双垂线-T1
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Translation
Incircle or Inscribed Circle
Vectors
Piecewise Functions
Median Line
