Find the total number of diagonals for a polygon of
a)

b)

a)
The total number of diagonals for the polygon with given sides.
Given:
The number of sides of the polygon is
Formula used:
The formula to calculate the total number of diagonals in a polygon is given by,
Here,
Definition:
A polygon which is equiangular and equilateral is called regular polygon.
Calculation:
Calculate the total number of diagonals in the polygon.
Substitute
b)
The total number of diagonals for the polygon with given sides.
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