Star polygons

thumb|upright=1.2|Pentagram A pentagram (sometimes known as a pentalpha, pentangle, or star pentagon) is a regular five-pointed star polygon, formed from the diagonal line segments of a convex (or simple, or non-self-intersecting) regular pentagon. Drawing a circle around the five points creates a similar symbol referred to as the pentacle, which is used widely by Wiccans and in paganism, or as a sign of life and connections, but there is also a inverted version.

[[File:Regular_hexagon_as_intersection_of_two_triangles.png|thumb|A regular hexagram, [[List_of_regular_polytopes_and_compounds#Two_dimensional_compounds|{6}[2{3}]{6}]], can be seen as a compound composed of an upwards (blue here) and downwards (pink) facing equilateral triangle, with their intersection as a regular hexagon (in green).]]

regular non-convex polygon

In geometry, an octagram is an eight-angled star polygon.

A heptagram, septagram, septegram or septogram is a seven-point star drawn with seven straight strokes.

star polygon with 9 sides

star polygon with 10 sides

In geometry, a dodecagram () is a star polygon or compound with 12 vertices. There is one regular dodecagram polygon (with Schläfli symbol and a turning number of 5). There are also 4 regular compounds and

In geometry, a hendecagram (also endecagram or endekagram) is a star polygon that has eleven vertices.