function[]=triang(v)
a=v(1);
b=v(2);
c=v(3);
d=v(4);
e=v(5);
f=v(6);
%-------------------------------------
if a<c
    x=a:0.01:c
    y=(((x-a)/(c-a))*(d-b)+b);
else
    x=c:0.01:a
    y=(((x-c)/(a-c))*(b-d)+d);
end
plot(x,y)
hold on
%--------------------------------------
if a<e
    x=a:0.01:e
    y=(((x-a)/(e-a))*(f-b)+b);
else
    x=e:0.01:a
    y=(((x-e)/(a-e))*(b-f)+f);
end
plot(x,y)
%---------------------------------------
if c<e
    x=c:0.01:e
    y=(((x-c)/(e-c))*(f-d)+d);
else
    x=e:0.01:c
    y=(((x-e)/(c-e))*(d-f)+f);
end
plot(x,y)
%----------------------------------------

axis equal