How do I figure this out?

29 Dodecagon

30 Heptagon

31 Octagon

32 Hexagon

Just divide 360 by the number of sides to find the exterior angles

and 900 by the number of sides for the interior

e) none of the above because the measure of angle cba is 101°

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2