Question

If the sum of the interior angles of a polygon is 20 right angles, find the number of its sides

Answer 1

Step-by-step explanation:

20 right angles = 1800°

let number of sides be n

n - 2 x 180° = 1800°

n-2 = 1800/180

n-2 = 10

n = 10+2

n = 12