Fibonacci Sequence is the series of number : 0 , 1 , 1 , 2 , 3 , 5 , 8 , 13 , 21 , 34 .... The next number is found by adding up the two numbers before it.
# The 2 is found by adding the two numbers before it ( 1 + 1)
# The 3 is found by adding the two numbers before it ( 1 + 2)
The radius is the distance from the center to any point. The distance from (2,1) to (0,1) is of course 2. The general formula for a circle with radius r and center (a,b) is
