The word ‘octagon’ is derived from the greek words ‘okta’ meaning ‘eight’ and ‘gon’ meaning ‘side;. The meaning of octagon is a polygon of eight angles and eight sides.
If you want to find the area, perimeter, diagonals, circumradius, and inradius of a regular octagon, come in and use the octagon calculator.. It has eight lines of reflective symmetry and rotational symmetry of order 8.