input geometriesyr16; figure(0,0,2u,2.5u); trace grille(0.5) withcolor orange; pair A,B,C; B=placepoint(1,1); C=placepoint(3,1); A=placepoint(3,4); trace polygone(A,B,C); trace codeperp(A,C,B,8); nomme.llft(B); nomme.lrt(C); nomme.urt(A); fin; end