I have no idea to get geographic coordinate (lat/long) of polygon and polyline. I'm using Sketch View Model esri javascript api 4.12.Please someone help.
Hi ko linn,
You can reproject it into wgs84, wkid : 4326 , for each geometry.
a few useful link below
webMercatorUtils | ArcGIS API for JavaScript 4.14
projection | ArcGIS API for JavaScript 4.14
ArcGIS API for JavaScript Sandbox
