Answer:
1260°; 5400°
Step-by-step explanation:
The sum of the measures of the interior angles of an n-sided convex polygon is
Sum = 180(n-2)°
(a) For a nonagon
n = 9
Sum = 180(9 - 2)
= 180 × 7
= 1260°
(b) For a dotriacontagon (a 32-gon)
n = 32
Sum = 180(32 - 2)
= 180 × 30
= 5400°
