The easiest way to draw a star in MATLAB ® is to use polar coordinates. You simply need to identify points on the circumference of a circle and draw lines between those points. For example, to draw a five-pointed star, start at the top of the circle (θ = π/2, r = 1) and work counterclockwise (Figure P8.17).

Prompt the user to specify either a five-pointed or a six-pointed star, using a menu. Then create the star in a MATLAB ® figure window. Note that a six-pointed star is made of three triangles and requires a strategy different from that used to create a five-pointed star.