Well, somebody in this world likes both classics and math.
Now here are some of the cool things.
By duplicating and arranging these triangles, is easy to construct a regular pentagon or decagon. By joining the diagonals of one pentagon, pentagons may be constructed infinity inwards, and by extending the sides, pentagons may be constructed infinitely outward. Not only that, but the product of one side each from any two successive pentagons is equal to the square of one side of the intervening star. Thus, the golden section is self propagating.
Big deal? Of no consequence in reality? Wrong. The divine proportion and the Fibonacci numbers which approach it are some of the most common mathematical elements in nature. The arrangement of seeds in a sunflower, producing a pretty spiral- that is due to the divine proportion. The fact that violets have five petals and starfish have five or eight limbs is due to the divine proportion and Fibonacci's Series. The Fibonacci series actually progresses as the sum of the previous two elements in the series, so it goes 1, 1, 2, 3, 5, 8, 13,...(note no two consecutive numbers share factors) Many plants in the world exhibit leaf or petal numbers as either a Fibonacci number or a multiple of a Fibonacci number. On a much more basic level, this appears to be controlled by the golden section. Now that is math.