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勾股定理
Author:
Loi Teng Chong
GeoGebra
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比較五件物件的重量
第八周作业1
折扣
双心四边形
常见四边形是否是双心四边形
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習作A三ch1_11
Similar Triangles
指數與對數函數
用向量找北极星
初中数学
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Cube
Quadrilaterals
Hyperbola
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Equilateral Triangles