Question

The sum of the measures of the interior angles of an octagon is

1) 180°

2) 360°

3) 540°

4) 1,080°

Answer 1

Fomula for sum of interior angles in polygon = 180(n-2)

When n = number of sides.

given octagon have 8 sides.

n = 8

Sum of interior angle = 180(8-2)

= 180*6

= 1080degrees

Option 4 is correct answer.