Draw a circle in google maps

How can I draw a circle from my location with a radious of 1 km from my home? I’ve tried with addPolygon, but I only can draw triangles, lots of triangles. So, what coordinates do I have to provide to the addPolygon block?
Thank you!

I think you’d need to create a circle from x,y coordinates. See this post on stackoverflow

Sorry, but I don’t understand how to make a circle in thunkable x, what coordinates do you need to provide as a parameter of add polygon block.
Thank you