Copy of polygon ring double
Create more patterns with 2 overlapping polygon rings.
See what to do with this applet in this video:
https://www.facebook.com/video.php?v=1018098711568048
see examples here: https://www.evernote.com/l/AAPjS-pqwppNUpgY-usWh6KecSjN6QWIrG8