A 7-sided polygon, known as a heptagon, is a geometric figure characterized by seven straight edges and seven vertices. In this shape, the internal angles and the overall symmetry provide interesting properties for study. Understanding these characteristics helps in fields such as architecture, art, and engineering, where precise shapes and angles are essential.

Key Features of a Heptagon:

  • Seven sides and seven vertices.
  • Interior angles sum to 900°.
  • Each interior angle in a regular heptagon measures approximately 128.57°.
  • Symmetry: A regular heptagon has 7 lines of reflectional symmetry.

Mathematical Analysis:

Property Value
Sum of Interior Angles 900°
Each Interior Angle 128.57°

"A heptagon's unique structure arises from its uneven distribution of angles, making it less common in simple architectural designs, but fascinating in mathematical studies."