20 diagonals
An octagon has 16 diagonals.
There are 20 diagonals
8 diagonals
4 diagonals
No, they do not.
20
An octagon has four (4) diagonals, each connecting two opposite vertices.
None, if it is an irregular octagon.
An Octagon has 20 diagonals in total. There is actually a really simple formula to figuring out the diagonals in any polygon: (n-3) x (n/2). If we put 8 in there than it would be (8-3) x (8/2) - 5x4=20, so the answer is 20 diagonals.
Sides: 8 Diagonals : 20
there are 5, 6, or 7 diagonals in a pentagon
octagon