What is the number of sides of a regular polygon having the sum of angles as $1980°$?

What is the number of sides of a regular polygon having the sum of angles as $3240°$?

Find the measure of each exterior angle of a regular hexagon.

If the measure of each exterior angle of a regular octagon is $k°$, then find the value of $k$.

Find the measure of each exterior angle of the following regular polygon.

Nonagon

Find the measure of each exterior angle of the following regular polygon.

Decagon

The measure of each interior angle of a pentagon is $x°$, find the value of $x$.

If the measure of each interior angle of a regular hexagon is $k°$. Find the value of $k$.

What is the measure of each interior angle of the following regular polygon?

Octagon