Hello, the answer should be [tex]108^o[/tex].
The interior angle of any shape formula, if the geometric shape is regular and the sum of interior angle is known, can be written as;
[tex]Interior=\frac{Sum(angles)}{Side}[/tex]
Regular pentagon has 5 sides.
The sum of interior angles of regular pentagon is [tex]540^o[/tex].
[tex]Result=\frac{540^o}{5}=108^o[/tex]
Good luck! If you have any question(s), then feel free to ask in comments.
