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Congruent (SS) 3
Author:
Ricky Chan
GeoGebra
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直線的斜率：水平變化 & 鉛垂變化
正方形雪花图案
盈利與虧蝕
双心四边形
科氏力 (Coriolis Force)
Discover Resources
soccer
鉛筆畫圓
勘根定理
圆的面积展开的副本
二倍角的余弦公式的证明
Discover Topics
Symmetry
Division
Centroid or Barycenter
Incircle or Inscribed Circle
Means