Solidworks Tutorial for Beginners #10: Polygon. 
The objective of this tutorial is to introduce to you the Polygon sketch tool.
At the end of this tutorial, you would be able to sketch using the Polygon tool, and understand the difference between inscribed cirle type and the circumscribed circle.
To access the tutorial playlist: https://www.youtube.com/channel/UCI-7KFfWRon1VfK0Z2v879Q/playlists
Step 1: Solidworks Tutorial for Beginners #10: Polygon.