graphsize 300,300 clg color purple #un carre poly {10,10,50, 10,50, 50,10, 50,10, 10} color green #un parallellogramme poly {90,10,140, 10,130, 50,80, 50,90, 10} color red # un trapeze poly {170,10,200, 10,220, 50,160, 50,170, 10} color blue # un losange poly {250,10,260, 30,250, 50,240, 30,250, 10} color cyan #un octogone poly {70,70,98,81,110, 100,98, 129,70, 140,42,129,30, 100,42, 81,70,70} color orange # bizarre poly {200,70,200,90,220,80,240, 90,230, 110,230, 140,190,140,190, 100,180, 100,180,90,190,90,190,80,160,80,200,70}