My method a little arranged :D
Same begin as Schbeurd :)
Array circular function: One Point, A Center, 1 as step vertical, 90 ° to fill, 3 repetitions,
And now Ladys and Gentleman the trick : take the Arc by 3 points :)
Draw it by the 3 previous point
Now the step became 2 (2*1) (because the 3 points Start , Middle, End)
Select the Arc
Just apply the formula *<:O)
Nb of repetition N > (N1) * 90° angle to fill
Example : 20 Repetitions > 19 * 90° = 1710° to fill, always step 2 (2*1)
Example following of that: seems perfect :)
@Shchbeurd : I am not sure that your method should be good without hand
