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在文[1]中,秦著国老师证明了由三角形中线长度m,n,p计算面积的公式:SΔABC=1/3((m+n+p)(m+p-n)(m+n-p)(n+p-m))~1/2(1)在文[2]中,王恒亮老师给出了一个“类海伦公式”的面积公式:已知三角形中线长度ma、mb、mc,记
In [1], Qin Guoguo’s teacher has proved the formula for calculating the area from the length m,n,p of the triangle’s midline: SΔABC=1/3((m+n+p)(m+pn)(m+np) (n+pm))~1/2(1) In [2], Wang Hengliang gives an area formula for the Helenian formula: the length of the known triangle centerline ma, mb, and mc.