Question

13. The sum of all interior angles of a regular polygon is 1080°. What is the measure of each of
its interior angles?
(a) 135°
(b) 1200
(c) 156
(d) 1440
1080p​

Answer 1

Answer:

sum of interior angle of a polygon=1080°

then it is octogon

sides =8

sum of exterior angle of a polygon=360°

exterior angle=360°/sides

exterior angle=360°/8

exterior angle=45°

interior angle=180°-exterior angle

interior angle=108°-45°

interior angle=135°