Number of diagonal of an n-sided polygon is__________

The number of diagonals for an n sided polygon is

If a polygon has 6 sides, then the number of diagonals of the polygon is _______

If a polygon has 8 sides, then the number of diagonals of the polygon is _____.

Find the number of diagonals of an n - sided polygon. In particular, find the number of diagonals when. a) n = 10 b) n = 15

The number of diagonals in a 27 - sided polygon is

The number of diagonal for an n sided polygon with 10 sides is

Write the number of diagonals of an n-sided polygon.

Write the number of diagonals of an n-sided polygon.