Answer
135$^{\circ}$
Work Step by Step
I=$\frac{(n-2)\times180}{n}$
I=$\frac{(8-2)\times180}{8}$
I=135
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.