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Heron formula
Author:
ralphchen
GeoGebra
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圓的基本性質
常见四边形是否是双心四边形
科氏力 (Coriolis Force)
平行線的斜率
三角函数 的副本
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線性組合2: 三角形
布丰投针实验
計算在區域內部的圖形總數的副本
P4 4N6 分數的種類及轉換 / Fraction Types and Their Conversions
描点法绘制函数图象,以一次函数为例
重叠形成的四边形
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Trigonometry
Angles
Quadrilaterals
Line Segment
Arithmetic Operations