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任意三角形面积和体积的计算,在建筑行业的工程量计算中是较常见到的。直角三角形、等腰三角形等特殊三角形的面积计算较方便简单的,但对于任意三角形
The calculation of the area and volume of any triangle is more common in engineering calculation in the construction industry. Right triangle, isosceles triangle and other special triangle area calculation is more convenient and simple, but for any triangle