%
% triangle.m Demonstrating the loop and
% graphics interaction
%

h=figure;
set(gcf,'DefaultTextColor','red');
v=get(h);
c=[0 100 100 0 0];
d=[0 0 100 100 0];
plot(c,d, 'g-');
title('yossi');

%

c=50;
d=10;
len=50; % length
%
  x(1)=c;
  x(2)=x(1)+len/2;
  x(3)=x(2)-len;
  x(4)=x(1);
  %--------------------
  y(1)=d;
  y(2)=y(1)+len*sin(pi/3);
  y(3)=y(2);
  y(4)=y(1);
%
%

  for j=1:3   
    line([x(j) x(j+1)],[y(j) y(j+1)]);
    text(x(j),y(j),num2str(j));
  end % i


a=50;
b=70;
len=50; % length
%
  x(1)=a;
  x(2)=x(1)-len/2;
  x(3)=x(2)+len;
  x(4)=x(1);
  %--------------------
  y(1)=b;
  y(2)=y(1)-len*sin(pi/3);
  y(3)=y(2);
  y(4)=y(1);
%
%

  for i=1:3   
    line([x(i) x(i+1)],[y(i) y(i+1)]);
    text(x(i),y(i),num2str(i));
  end % i