MATLAB code for Arrow

%Code:

figure;

axis([-7 3 -2 2]);

pause(1);

pause(1);

hold on;

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

x=cos(t);

y=sin(t);

x1=[x(1) x(2) -1 0 -1 x(3) x(1)];

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

plot([0  0 -5 -5 0],[0.1,-0.1,-0.1,0.1 0.1],'k');

pause(1);

fill([0  0 -5 -5],[0.1,-0.1,-0.1,0.1],'k');

pause(1);

hold on;

plot(x1,y1,'k');

pause(1);

fill(x1,y1,'k');