semms like 10 not sure
An octagon has 16 diagonals.
4 diagonals
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.
both are parallel
An octagon has 16 diagonals.
An octagon need not have any parallel sides. But it can have any number from 2 to 8 lines that are parallel - in pairs, triplets or quartets.
There are 20 diagonals
20 diagonals
An octagon can have up to four pairs of parallel sides, but it need not have any.
8 diagonals
4 diagonals
It can, but it need not.
No, they do not.
20
An octagon has four (4) diagonals, each connecting two opposite vertices.