If you ever have the need to get the wkt (well known text) or json text data for a geometry in QGIS then this plugin is a great way to do it, and super-quick too. It was developed by Paul Skeen and you can read more about it here.
https://github.com/skeenp/QGIS3-getWKT
See my intro and intermediate QGIS courses for more: https://www.udemy.com/user/alasdair-r...