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Author:
杨欣霞
GeoGebra
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龙形曲线-分形龙2
平行線的判定
龙形曲线-分形龙
盈利與虧蝕
折扣
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垂心
圖I
Locus: Fixed Distance From Fixed Point
謝謝 80335 盧沛宏
F1Ch8 Translation basic
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Geometric Transformations
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