How to make a selection of areas on google maps maps?

Question

Google

Tell me if there are tools for selecting areas on Google maps in the form of polygons (polygons) to get an array of coordinates (longitude, latitude)?
So, for example, done in wikimapia.

Answer 1

Perhaps you are looking for this.

Answer 2

It is better to look in the official documentation code.google.com/intl/en/apis/maps/documentation/javascript/overlays.html#Polygons