Question : Each interior angle of a regular polygon is $18^{\circ}$ more than eight times an exterior angle. The number of sides of the polygon is:

Option 1: 10

Option 2: 15

Option 3: 20

Option 4: 25

Question : A polygon has 54 diagonals. The number of sides in the polygon is:

Option 1: 7

Option 2: 9

Option 3: 12

Option 4: 15

Question : The sum of interior angles of a regular polygon is $1440^{\circ}$. The number of sides of the polygon is:

Option 1: 10

Option 2: 12

Option 3: 6

Option 4: 8