Exercise $3.$ Consider the following code segment. How many triangles are drawn?

glBegin$($GL$\_$TRIANGLE$\_$FAN$)$;

gIVertex $2f(0.,0\mathrm{.}5)$;

gIVertex $2f(0\mathrm{.}2,0\mathrm{.}5)$;

glVertex $2f(0\mathrm{.}4,0\mathrm{.}5)$;

gIVertex $2f(0\mathrm{.}6,0\mathrm{.}9)$;

glVertex$2$f$(0\mathrm{.}7,0\mathrm{.}2)$; gIVertex $,$

$-0\mathrm{.}2$; gIVertex $2f(-0\mathrm{.}2,0\mathrm{.}0)$;

gIEnd$()$;

glBegin$($GL$\_$TRIANGLES$)$;

for $($int $i=1$;$i<mn\; id="EditorElement\_5328380">1</mn><mn\; id="EditorElement\_5328381">0</mn>$;$++$i glVertex $2f(0\mathrm{.}09**i,-0\mathrm{.}7)$;

gIVertex$2$f$(-0\mathrm{.}09*$i$,-0\mathrm{.}3$