Hello, I wanted to use sqrt(3)/2 but without success. Instead, I replaced this value with an approximate value 0.866 How should it be done ? Thank you Fabrice \starttext \startMPcode draw fullcircle scaled 1cm withcolor magenta ; draw fullcircle scaled 1cm shifted (1cm,0) withcolor magenta ; draw fullcircle scaled 1cm shifted (0.5cm,0.866cm) withcolor magenta ; \stopMPcode \stoptext