please answer this question

[tex]\bold{\huge{\underline{ Solution }}}[/tex]
Before answering the given question, you should know the difference between polygon and regular polygon.
There are different types of polygon based on the sides :-
I have thought to make a 4 side polygon that is quadrilateral.
Steps of construction :-
Result :- All the angles are equal that is 90° each.
Conclusion :- The above figure is square as it is having equal sides and angles.
Here,
Therefore,
The sum of the angles of the given polygon
[tex]\sf{ = 90{\degree} + 90{\degree} + 90{\degree} + 90{\degree} }[/tex]
[tex]\sf{ = 180{\degree} + 90{\degree} + 90{\degree} }[/tex]
[tex]\sf{ = 270{\degree} + 90{\degree} }[/tex]
[tex]\sf{ = 360{\degree} }[/tex]
Hence, The sum of the angles of the above polygon is 360° .