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圓形變變變2(螺旋丸)-學用
Author:
羅元甫
GeoGebra
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圓周公式的應用
圓的切線方程
漂亮的摇摆曲线
垂直線的斜率
兩位數除以一位數（一）
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減法運算
救生員的職責
滑桿應用
示例2
求公切線段長
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Right Triangles
Percentages
Parametric Curves
Polygons
Conic Sections