It's not 1, but it is the arithmetic mean of its reciprocal and its square.
It's not 1, but it is the arithmetic mean of its reciprocal and its square. The limit of the ratio of successive Fibonacci numbers, its continued fraction consists of all ones. If a line segment is divided so that the ratio of the whole to the large is the same as the ratio of the large to the small, both ratios will be equal to this number. Often denoted by phi, for ten points, name this number one less than its square and one more than its reciprocal.
It's not 1, but it is the arithmetic mean of its reciprocal and its square.
{golden ratio} or (1 + rt(5))/2 [READ: “{one plus} the square {root} of {five, over two}”, prompt on phi before mentioned]