65. The equation to figure the number of diagonal lines for any polygon is n(n-3)/2. n= number of vertices
How many diagonal lines does a 1million sided shape have
their would be still 2 diagonal lines * * * * * There are 8*(8-3)/2 = 8*5/2 = 20 lines joining two vertices. That being the conventional definition of a diagonal, there are 20 diagonals.
There are three diagonal lines in a six sided Polygon(Hexagon)
170 diagonals
A nine sided nonagon has 27 diagonals
An octagon is an eight-sided figure.
1/2*(362-3*36) = 594 diagonals
Anything from none to 8.
It can certainly have 0, 1, 2 or 6 lines of symmetry.
There are 35 diagonals inside a decagon
It can have 1 or 6. Not sure about 3.