The sum of my interior angles is

540°

Pentagon

The sum of my interior angles is

1,080°

Octagon

The sum of my interior angles is

360°

The sum of my interior angles is

180°

Triangle

Hexagon

The sum of my interior angles is

720°

Quadrilateral

The sum of my interior angles is

1,260°

Nonagon

Septagon/Heptagon

The sum of my interior angles is

900°

If I am regular the sum of my angles

is 135°

If I am regular the sum of my angles

is 60°

If I am regular the sum of my angles

is 90°

If I am regular the sum of my angles

is 140°

If I am regular the sum of my angles

is 120°

If I am regular the sum of my angles

is 128°

If I am regular the sum of my angles

is 108°