Phyllotactic spirals
Golden ratio: $\phi = \frac{1 + \sqrt 5}{2}$
Golden angle: $g = \frac{2\pi}{\phi^2}$
Number of dots:
starting from #
Show numbers
Spirals to show:
1
(Connect every dot to the next in sequence)
2
(Connect every dot $n$ to dot $n+2$)
3
5
8
13
21
34
55
89
144
233
(Type in your own interval.)
squarest
(An algorithm connects each dot to two others, using the Fibonacci intervals that give the best approximation to a right angle.)