121621
Published: 17th February, 2012
Last edited: 25th March, 2012
Created: 17th February, 2012
A regular octagon is a closed figure with sides of the same length and internal angles of the same size. It has eight lines of reflective symmetry and rotational symmetry of order 8. The internal angle at each vertex of a regular octagon is 135° and the sum of all the internal angles is 1080° (as for any octagon).
Octagon, medieval?
