beginfig(1); u = 0.0833333333 cm; draw ( 0.0000000000u, 0.0000000000u)-- ( 120.0000000000u, 0.0000000000u)-- ( 120.0000000000u, 80.0000000000u)-- ( 0.0000000000u, 80.0000000000u)--cycle; draw fullcircle xscaled 42.0000000000u yscaled 42.0000000000u shifted ( 21.0000000000u, 59.0000000000u); draw fullcircle xscaled 42.0000000000u yscaled 42.0000000000u shifted ( 39.3735958011u, 21.0000000000u); draw fullcircle xscaled 42.0000000000u yscaled 42.0000000000u shifted ( 99.0000000000u, 37.0574234815u); draw fullcircle xscaled 42.0000000000u yscaled 42.0000000000u shifted ( 63.1865671242u, 59.0000000000u); endfig; end;