What is the number of diagonals in a
(i) hentagon (ii) octagon (iii) polygon of 12 sides ?

Find the number of diagonals of a : (i) pentagon (ii) octagon.

Find the number of diagonals of (i) a hexagon, (ii) a decagon, (iii) a polygon of 18 sides.

What is the number of diagonals in a (i) quadrilateral (ii) pentagon (iii) hexagon (iv) polygon of 10 sides ?

The number of diagonals in a 27 - sided polygon is

Find the measure of each interior angle of a regular (i) pentagon (ii) hexagon (iii) octagon (iv) polygon of 12 sides

What is the sum of all interior angles of a regular (i) pentagon (ii) hexagon (iii) nonagon (iv) polygon of 12 sides ?

The number of diagonals for an n sided polygon is

The number of diagonals in a polygon of m sides is

The number of diagonals in a polygon of 10 sides is