Octagon
2D shape
In geometry, an octagon is an eight-sided polygon or 8-gon.
A regular octagon has Schläfli symbol {8} and can also be constructed as a quasiregular truncated square, t{4}, which alternates two types of edges. A truncated octagon, t{8} is a... Wikipedia
Measure of exterior angle: 45°
Number of edges: 8
Sum of interior angles: 1,080°
Number of vertices: 8
Line of symmetry: 8
Rotational symmetry order: 8
Symmetry group: Dihedral (D₈) and order 2×8