A POLYGON is a closed shape with straight sides. Regular polygons have equal sides and angles.
Some polygons have a particular method to draw. There is also a GENERAL METHOD to draw polygons of any number of sides.
You can draw STAR POLYGONS connecting non consecutive vertices once you have drawn the regular polygon.
These are different regular STAR HEPTAGONS that have been freely decorated with colored pencils or markers.
The YouTube Chanel Arthur Geometry has some videos to explain the steps to draw regular polygons following the general method.