For example a polygon with three sides is called a triangle. The Esoteric Meaning of the Hexagon and the Fruit of Life. Many of our words in science and math hearken back to the Greek and hexagon is no exception.
A polygon with four sides is called a quadrilateral.
The total of the internal angles of any simple non-self-intersecting hexagon is 720. Definition of a hexagon A hexagon is a flat shape all in one plane with six sides all of equal length. What is a plane. Hex is a Greek prefix which means six A regular hexagon has six sides that are all congruent or equal in measurement.