Moving arrow -Translation of figure in MATLAB

Code:

figure;

hold on;

axis([-2 52 -2 2]);

axis equal;

pause(10);

for i=0:2:50

t=0:2*pi/3:2*pi;

x=cos(t);

y=sin(t);

x1=[x(1) x(2) -1 0.2 -1 x(3) x(1)]+i;

y1=[y(1) y(2) y(2) 0 -y(2) y(3) y(1)];

fill(x1,y1,'k');

hold on;

pause(1);

axis equal;

end

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