Supplementary adjacent angles form a "linear pair." Together, they make a line. The angle supplementary to 85° will be slightly obtuse, just as 85° is slightly acute.
It the outside of a figure
45/3=15 45-15=30 30/5=6 3x6=18 30-18=12 the answer is 12
Your answer is $29.13 I hope this helped, I apologize for the late response!