The {5/2} star pentagon (pentagram) is also known as a pentalpha or pentangle and historically has been considered by many magical and religious cults to have occult significance.
The {6/2} star polygon (hexagram) is a symbol of Judaism (Star of David) as well as symbol used in Hinduism (the Shatkona).
The {7/2} and {7/3} star polygons (heptagrams) are often incorporated into modern flags.
The {8/3} star polygon (octagram) is frequent in geometrical motifs in Mughal Islamic art and architecture.
Star Polygons & Isotoxal Stars are featured prominently in art and culture: