MAP, feature collection: Can I CREATE a new circle in code?

I can create a new map marker using code. Is there an equivalent way to create a circle using only blocks?

Perhaps this could help you,

Thank you for your response. This example assumes that Circle1 has been created in the UI. I do not have the components created yet. I want to add circle components to the map dynamically.

Not possible to create a new circle with Blocks on a Map object. The Marker object is a special case that allows design time Markers and run time Markers.
'design time' Circles are the only possibility App Inventor developers have available using Blocks.

Review and compare Marker and Circle documentation. There is a CreateMarker block Method for a Map but no corresponding Method for a Circle .