NUMBER OF DIAGONALS OF A POLYGON WORKSHEET

Problem 1 :

Find the number of diagonal of the polygon ‘’Triangle’’.

Problem 2 :

Find the number of diagonal of the polygon ‘’Quadrilateral’’.

Problem 3 :

Find the number of diagonal of the polygon ‘’Pentagon’’.

Problem 4 :

Find the number of diagonal of the polygon ‘’Hexagon’’

Problem 5 :

Find the number of diagonal of the polygon ‘’Heptagon’’.

Problem 6 :

Find the number of diagonal of the polygon ‘’Octagon’’.

Problem 7 :

Find the number of diagonal of the polygon ‘’Nonagon’’.

Problem 8 :

Find the number of diagonal of the polygon ‘’Decagon’’.

Answer Key

1) The number of diagonals for the triangle is 0.

2) Number of diagonals for the quadrilateral is 2.

3) Number of diagonals for the pentagon is 5.

4) Number of diagonals for the hexagon is 9.

5) Number of diagonals for the heptagon is 14.

6) umber of diagonals for the octagon is 20.

7) Number of diagonals for the nonagon is 27.

8) Number of diagonals for the decagon is 35.