ABSTRACT

This chapter defines several ways of creating, or interpreting, two-dimensional stars in any media. It starts by defining regular polygons and the key angles: central, exterior and interior. A table lists these angles, and the names, of polygons with between three and twenty sides. A classic Logo procedure is given for drawing a polygon of n sides.

The methods for creating stars are: overlapping polygons, stellation, joining diagonals to make star polygons, moving the midpoints of edges, rosettes, kaleidoscope mirrors, and rotation. The Logo procedure is shown to draw some star polygons when the input is a not an integer. The Schläfli symbol of star polygons is described. Illustrations are given of star polygons having between five and twenty sides.