A polygon of $10$sides has diagonals.

Fill in the blank.

The sum of interior angles of a hexagon is _____.

The sum of the measures of the exterior angles of a polygon is _____$°$.

Each exterior angle of a regular polygon of $12$ sides is _____$°$.

If the measure of each exterior angle of a regular polygon is $36°$ then it has _____ sides.

If the sum of all interior angles of a pentagon is $k°$, then find the value of $k$.

Find the sum of all interior angles of the following regular polygons.

Hexagon

Find the sum of all interior angles of the regular Nonagon.

Find the sum of all interior angles of the regular polygon of $11$ sides.