MYSTIC ROSE

Over the last couple of weeks the members of room 15 have been creating mathematical patterns known as a mystic rose.

The patterns are created by placing points evenly around the circumference of a circle and then linking the points up using straight lines.

A mystic rose can simple and quite complicated depending on the amount of points you choose to place around the circumference. How many lines do you think you might need to draw a 20 point mystic rose?