note! 4-figure:
we turn 120 degrees and not 90, but 1 bit is only 60 deg – so we need more degrees:
4 x (60 + 120) = 720 deg. we have a closure
oh and as a bonus:
here is the corresponding “inverse” shape that would fit the other
45+45+45+45 45+45+45+45 = 360
