距离=√（x1-x2）²+（y1-y2）²
xyz
mg1302043.56553658.092455.90mg14302043.09553637.472445.20mg16-mg10.4720.6210.70（mg16-mg1）
425.41
平方和的和{（mg16-mg1）平方和的和}开20.63平方tan=A0.52A27.47
距离=√（x1-x2）²+（y1-y2）²
xy
mg1302043.56mg174302043.71mg16-mg1-0.15（mg16-mg1）平
方和的和69.58
{（mg16-mg1）平方和的和}开平方8.34tan=A0.44A
23.75
z
553658.092455.905539.752452.20
8.343.70
