A
(14)
| B
(13)
| C
(18)
| D
(12)
| E
(7)
| F
(17)
| G
(6)
| H
(8)
| I
(5)
| J
(2)
| K
(2)
| L
(2)
| M
(10)
| N
(4)
| O
(2)
| P
(20)
| Q
(2)
| R
(16)
| S
(30)
| T
(9)
| U
(8)
| V
(5)
| W
(6)
| X
(1)
| Y
(1)
| Z
(1)
| Π
(1)
| Φ
(1)
An octagon is a closed shape formed by eight line segments, with an interior angle sum of 1080 degrees. It can be a regular octagon or an irregular octagon and is often used in architecture and signage design.
