http://www.sciencevsmagic.net/geo
Added 10-gon, 24-gon, 48-gon, and, in what must be a bug, a 2-gon in 16 moves.
The pentagon, I'll admit, was just a matter of luck, but the last one I got was circle pack 4 in minimal steps.
[ATTACHED IMAGE - CLICK FOR FULL SIZE]
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