Question

find the sum of all interior of the following regular polygon 1) Nonagon 2) polygon of 11 sides 3 ) polygon of 16 sides​

Answer 1

Answer:

1) (2 × 9 - 4) × 90°

= 18 - 4 × 90°

= 14 × 90°

= 1260°

2) (2 × 11 - 4) × 90°

= 22 - 4 × 90°

= 18 × 90°

= 1620°

3)  (2 × 16 - 4) × 90°

= 32 - 4 × 90°

= 28 × 90°

= 2520°

Hope it helps you!!