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Heron formula

Author:ralphchen

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垂直線的斜率
多邊形的面積
比較五件物件的重量
撒针估算面积实验
科氏力 (Coriolis Force)

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千變萬化的顏色
平方數平方數
hello
六芒星
雙曲線2 交點法

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Optimization Problems
Trigonometric Functions
Perimeter
Addition
Statistics

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