The angle 16 is given as,m<16 = 88°.
The sum of angle 16 and angle 9 is 180°.
[tex]m\angle16+m\angle9=180^{\circ}[/tex][tex]88^{\circ}+m\angle9=180^{\circ}[/tex][tex]m\angle9=180^{\circ}-88^{\circ}[/tex][tex]m\angle9=92^{\circ}[/tex]
Thus the value of angle 9 is ,
[tex]m\angle9=92^{\circ}[/tex]
