8 diagonals
octagon
A undecagon has 44 diagonals. A dodecagon has 54 diagonals. An octagon has 20 diagonals. A heptagon has 14 diagonals.
No.
16 diagonals* * * * *5. To all vertices except itself and one each on either side.
An octagon has 16 diagonals.
There are 20 diagonals
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.
there are 5, 6, or 7 diagonals in a pentagon
Sides: 8 Diagonals : 20
no