Which polygon has an interior angle sum of 1080°? A polygon has 8 sides.
A polygon has 10 sides.
A polygon has 9 sides.
A polygon has 7 sides.

It is the first option 8 sides.

Step-by-step explanation:

we can set an equation up for this question: 1080=180(n-2)

divide:

 1080/180=n-2

= 6=n-2

= n=8

isnt that very easy?

1) c 2143.6 cm

2) c 113.0 m

3) a 33.5 ft

4)   d 2 cm

5) c 20 mm

6) 180 in

7) d 120 ft