//setting line color
    gfx_color(255,255,255);

    //drawing vertical grid
    gfx_line(600,0,600,800);
    gfx_line(800,0,800,800);
    gfx_line(1000,0,1000,800);
    gfx_line(1200,0,1200,800);

    //drawing horizontal grid
    gfx_line(600,200,1200,200);
    gfx_line(600,400,1200,400);
    gfx_line(600,600,1200,600);
    gfx_line(600,800,1200,800);


    // triangle
    gfx_color(0,255,0);//light green
    gfx_line(650,75,750,75);
    gfx_line(750,75,700,125);
    gfx_line(700,125,650,75);

    gfx_color(138,43,226);//purple
    gfx_line(850,75,950,75);
    gfx_line(950,75,900,125);
    gfx_line(900,125,850,75);

    gfx_color(220,20,60);//red
    gfx_line(1050,75,1150,75);
    gfx_line(1150,75,1100,125);
    gfx_line(1100,125,1050,75);

    //parallelogram
    gfx_color(255,255,255);//white
    gfx_line(635,275,660,325);
    gfx_line(735,275,760,325);
    gfx_line(635,275,735,275);
    gfx_line(660,325,760,325);

    gfx_color(72,209,204);//light blue
    gfx_line(835,275,860,325);
    gfx_line(935,275,960,325);
    gfx_line(835,275,935,275);
    gfx_line(860,325,960,325);

    gfx_color(0,0,255);//dark blue
    gfx_line(1035,275,1060,325);
    gfx_line(1135,275,1160,325);
    gfx_line(1035,275,1135,275);
    gfx_line(1060,325,1160,325);

    //diamond
    gfx_color(0,0,255); //blue
    gfx_line(650,700,700,750);
    gfx_line(700,750,750,700);
    gfx_line(750,700,700,650);
    gfx_line(700,650,650,700);

    gfx_color(0,128,0); //dark green
    gfx_line(850,700,900,750);
    gfx_line(900,750,950,700);
    gfx_line(950,700,900,650);
    gfx_line(900,650,850,700);

    gfx_color(0,255,0);//light green
    gfx_line(1050,700,1100,750);
    gfx_line(1100,750,1150,700);
    gfx_line(1150,700,1100,650);
    gfx_line(1100,650,1050,700);

    //circle
    gfx_color(255,0,255); //pink
    gfx_circle(700,500,100);

    gfx_color(255,105,180); //light pink
    gfx_circle(900,500,100);

    gfx_color(255,255,0); //yellow
    gfx_circle(1100,500,100);