Question

find the number of sides of an n-gon if the sum of the interior angle is:
a) 1800°​

Answer 1

Answer:

12 sides

Step-by-step explanation:

Sum of interior angles = (n-2) × 180°

Given, sum of interior angles = 1800°

=> (n-2) × 180° = 1800°

=> (n-2) = 10

=> n = 10+2

=> n = 12