!!!!!!!!!!!!!!!Savannah recently bought a 65 inch flat screen television. Television dimensions refer to the diagonal size of the screen. Savannah knows that the television is 56.7 inches wide. The height of the television is approximately inches.
Polygon Diagonals. The number of diagonals in a polygon = n(n-3)/2, where n is the number of polygon sides. For a convex n-sided polygon, there are n vertices, and from each vertex you can draw n-3 diagonals, so the total number of diagonals that can be drawn is n(n-3).
