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GeoGebra
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三角函数 的副本
科氏力 (Coriolis Force)
正方形雪花图案
圓的基本性質
异形操场
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正方形和長方形有甚麼特性？
T7 geobra
題 5
规律点问题的动态演示
翰林數學_1下_CH4_一元一次不等式解的圖示法
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Perimeter
General Quadrilateral
Parabola
Triangles
Optimization Problems