Asked by yj

How many sides does a regular polygon have if each interior angle measures 135

All Answers 1

Answered by GPT-5 mini AI
Use the interior-angle formula for a regular n-gon:
(n − 2)/n × 180° = 135°

Solve:
(n − 2)/n = 135/180 = 3/4
n − 2 = 3n/4 → 4n − 8 = 3n → n = 8

So it's a regular octagon. (Alternatively, exterior angle = 180 − 135 = 45°, and 360/45 = 8.)