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Author:
曾耀輝
GeoGebra
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三角函数 的副本
百分數及其應用
科赫雪花
异形操场
龙形曲线-分形龙2
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生活中的平面圖形關係─相似
西瓦定理 (Ceva's Theorem)
ghk106a18 三角形的外心與正方形
特殊四边形的转换
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Quadrilaterals
Matrices
Circumcircle or Circumscribed Circle
Algebra
Incircle or Inscribed Circle