Question : Find the sum of the measures of all the interior angles of a polygon having twelve sides.

Option 1: 1800°

Option 2: 2520°

Option 3: 2880°

Option 4: 3240°

Question : The interior angle of a regular polygon exceeds its exterior angle by 108$^\circ$. The number of the sides of the polygon is:

Option 1: 12

Option 2: 16

Option 3: 14

Option 4: 10

Question : If one of the interior angles of a regular polygon is $\frac{15}{16}$ times of one of the interior angles of a regular decagon, then find the number of diagonals of the polygon.

Option 1: 20

Option 2: 14

Option 3: 2

Option 4: 35

Question : Two regular polygons are such that the ratio between their number of sides is 1 : 2 and the ratio of measures of their interior angles is 3 : 4. Then the number of sides of each polygon is:

Option 1: 10 and 20

Option 2: 4 and 8

Option 3: 3 and 6

Option 4: 5 and 10

Question : The sum of the interior angles of a regular polygon A is 1260 degrees and each interior angle of a regular polygon B is $128 \frac{4}{7}$ degrees. The sum of the number of sides of polygons A and B is:

Option 1: 17

Option 2: 16

Option 3: 19

Option 4: 18