performing shear on lines

I have a shear matrix smat=[1 (0.2);0 1]

I used this to shear a couple of circles on a plot but when i tried to use the same method for the lines that attaches to the circles, i get a weird result.heres the code for that.

h1 and h2 are the lines and outputnew should be the line with the shear performed.

h1=output(1:2,:)';

h2=output(3:4,:)';

outputnew(1:2,:)=(h1*smat)';

outputnew(3:4,:)=(h2*smat)';