如何在osm中将点数据更改为多边形

Hi all i have an array of point object of OpenLayers called vertices[] as vertices="POINT(78.40873715820317 17.400524043704443), POINT(78.425388311768 17.38692766193279), POINT(78.40238568725626 17.384142736159205)"Hi all i have an array of point object of OpenL