C# 给出一堆不规则多边形边沿坐标，如何算出其中心坐标位置？

问题遇到的现象和发生背景

C# 给出一堆不规则多边形边沿坐标，如何算出其中心坐标位置？如下图一个封闭的多边形，如何用代码计算出其中心坐标？

问题相关代码，请勿粘贴截图

X: 2.50299212598425 Y: 4.3142125984252
line3 StartX: 2.50299212598425 StartY: 4.3142125984252 StopX: 2.4911811023622 StopY: 4.3142125984252
circular arc4 StartX: 2.4911811023622 StartY: 4.3142125984252 StopX: 2.48724409448819 StopY: 4.30992125984252

line5 StartX: 2.48724409448819 StartY: 4.30992125984252 StopX: 2.48724409448819 StopY: 4.29846456692913
circular arc6 StartX: 2.48724409448819 StartY: 4.29846456692913 StopX: 2.4911811023622 StopY: 4.29452755905512

line7 StartX: 2.4911811023622 StartY: 4.29452755905512 StopX: 2.50299212598425 StopY: 4.29452755905512
circular arc8 StartX: 2.50299212598425 StartY: 4.29452755905512 StopX: 2.50692913385827 StopY: 4.29846456692913

line9 StartX: 2.50692913385827 StartY: 4.29846456692913 StopX: 2.50692913385827 StopY: 4.31027559055118
circular arc10 StartX: 2.50692913385827 StartY: 4.31027559055118 StopX: 2.50299212598425 StopY: 4.3142125984252

line10StopX: 2.50299212598425 StopY: 4.3142125984252

获得X和Y的最大值和最小值，centerX = minX + (maxX-minX) / 2, centerY = minY + (maxY - minY) / 2