One angle of a seven-sided polygon is 114° and each of the other six angles is x°. Then the magnitude of x is :

1. 131°c

2. 132°

3. 135°

4. 130°

If each interior angle of a polygon is 144°; the number of sides in it is :

1. 5

2. 10

3. 6

4. 7

The sum of the interior angles of a regular polygon is equal to six times the sum of its exterior angles. The number of sides of the polygon is :

1. 14

2. 10

3. 12

4. 16

An exterior angle and an interior angle of a regular polygon are in the ratio 2 : 7. The number of sides in the polygon is :

1. 12

2. 6

3. 4

4. 9