Answer:
157°
Step-by-step explanation:
Sum of interior angles of polygon
(n-2)*180 ---- n = total number of sides
7 angles, 7 sides
5*180 = 900
final angle will be
900-162-115-125-138-105-98
=157
157
it is obvious that it's a heptagon
so (n-2) x180
n=7
(7-2) x 180 =900
900-743=157
final unknown=157°
