Sum of all Interior Angles of a Polygon

Q. Name the polygon whose interior angles add up to ${720}^{\circ }$.

1. Decagon
2. Heptagon
3. Pentagon
4. Hexagon

Q. Can the sum of the measures of all the interior angles of a polygon be ${1170}^{\circ }$?

1. Yes
2. No

Q. What is the sum of all interior angles of the polygon having $n$ number of sides.

1. ${360}^o(n-2)$
2. ${180}^o(n-2)$
3. ${180}^o(n-1)$
4. ${360}^o(n-1)$

Q. Name the polygon whose sum of interior angles is equal to the sum of its exterior angles.

1. Isosceles Triangle
2. Equilateral Triangle
3. Quadrilateral
4. Pentagon

Q. Calculate the sum of all the interior angles of a polygon having $8$ sides.

1. ${1080}^{\circ }$
2. ${540}^{\circ }$
3. ${1260}^{\circ }$
4. ${360}^{\circ }$

Q. What is the diffrence between the interior and the exterior angle of a regular pentagon?

1. ${72}^o$
2. ${108}^o$
3. ${36}^o$
4. ${30}^o$

Q. The number of sides of the polygon in which all the interior angles sums to ${1980}^o$ is

1. $11$
2. $12$
3. $13$
4. $14$

Q. In a certain polygon, the sum of the measures of all the interior angles is equal to twice that of the exterior angles. The polygon is a.

1. Pentagon
2. Hexagon
3. Octagon