Straight edge Quote by Matt Parker
““The proof in 1882 that pi is a transcendental number put a 2,000 year old problem to rest: for any given circle, can you draw a square of the same surface area using a compass and a straight edge? Since 1882, we know that no, you can't. To draw a square the area of a circle you need to be able to draw a line pi units long, and you cannot draw transcendental numbers.””