The Fibonacci sequence is named after Leonardo of Pisa, who was known as Fibonacci. It is an approximation of the golden spiral created by drawing circular arcs connecting the opposite corners of squares in the Fibonacci tiling; this one uses squares of sizes 1, 1, 2, 3, 5, 8, 13, 21, and 34. We thought that ,as each square of the spiral includes a quarter of a circle, it should be a real quarter. |