Question

How do I solve for this?

Answer 1

`\underset{in~degrees}{\textit{Sum of All Interior Angles}}\\\\ n\theta = 180(n-2) ~~ \begin{cases} n=\stackrel{number~of}{sides}\\ \theta = \stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ n=6 \end{cases}\implies 6\theta =180(6-2)\implies 6\theta =720 \\\\\\ \theta =\cfrac{720}{6}\implies \theta =120^o`

Check the picture below.