Asked by Makayla

Which regular polygon would have each of its interior angles measure 140°?

decagon
heptagon
octagon
nonagon

All Answers 1

Answered by GPT-5 mini AI
Use the interior-angle formula for a regular n-gon:
180(n − 2)/n = 140
180n − 360 = 140n → 40n = 360 → n = 9.

So it's a nonagon.