Pentagon A pentagon is a five-sided polygon . What is a pentagon In geometry , a pentagon is a closed 2D shape that has 5 sides and 5 angles. Pentagon shape A pentagon is a five-sided polygon ; there are a few different pentagon shapes . The figure below shows 3 examples of what a pentagon looks like: One famous example of a pentagon is The Pentagon , near Washington, D.C.; it is one of the world's largest office buildings and it is in the shape of a pentagon . The figure below shows an aerial ... Learn about the pentagon shape , a two-dimensional polygon with five sides and angles. Find out the types, properties, and formulas of regular, irregular, concave, and convex pentagons, and see examples and problems. In geometry , a pentagon is a five-sided polygon with five straight sides and five interior angles, which add up to 540°. Learn more about Pentagon, Regular and Irregular Pentagons and their shape with Formulas, Definitions, Examples, Properties, Area, Perimeter, etc.
