It has 20 diagonals
A 7 sided polygon has 14 diagonals
The five sided Polygon has 5 diagonals
Number of diagonals = 1/2*(n2-3n) where n = the number of sides of the polygon.
38 diagonals
It is: 0.5*(n2-3n) = diagonals whereas n is the number of sides of the polygon
The formula is: 0.5*(n2-3n) = diagonals whereas n is the number of sides of the polygon
A polygon with 14 diagonals will have 7 sides
11
209
The equation is: 0.5*(n2-3n) = diagonals whereas n is the number of sides of the polygon
There is no such polygon that fits the given information.
It is: 0.5*(n2-3n) = diagonals whereas 'n' is the number of sides of the polygon