What is heptágono?

A heptagon is a geometrical shape or polygon with seven sides and seven vertices. It is also known as a septagon. The sum of all internal angles of a heptagon is 900 degrees. The heptagon has seven unique diagonals, which connect a vertex to a non-adjacent vertex. It can be regular or irregular, depending on whether all of its angles and sides are equal or not. Heptagons are often used in art and design, and can sometimes be found in architecture as well.