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GeoGebra
GeoGebra Lesson
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Google Classroom
GeoGebra
GeoGebra Lesson
Outline
有趣的线
心形线
有趣的线
Author:
万超杰
心形线
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心形线
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優良作品2(祥恩)
HKCEE 2011 Q17
rotational symmetry_4
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