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Author:
Louis，Hong
GeoGebra
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折扣
常见四边形是否是双心四边形
百分數及其應用
第三周作业效果演示
第八周作业3
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task7
阿波羅尼斯相關問題：與兩相切圓外切和一圓內切
HKCEE-AM 2010 Q17 part a+b
External tangent
[拋物線]與直線相切且與圓外切之所有圓的圓心軌跡方程式
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Derivative
Trigonometric Functions
Rotation
Incircle or Inscribed Circle
Calculus