Let's write the measurement of each interior and exterior angle of the following polygon.
Nonagon

Let's write the measurement of each interior and exterior angle of the following polygon. Pentagon

Let's write the measurement of each interior and exterior angle of the following polygon. octagon

Let's write the measurement of each interior and exterior angle of the following polygon. hexagon

Let's write the measurement of each interior and exterior angle of the following polygon. Decagon

Let's write the measurement of each interior and exterior angle of the following polygon. Polygon with 18 sides

Let's write the measurement of each interior and exterior angle of a regular polygon with 10 sides.

Let's write the sum of the measurement of the interior angles of the following polygons: Pentagon

Let's write the sum of the measurement of the interior angles of the following polygons: octagon

Let's write the sum of the measurement of the interior angles of the following polygons: polygon with 12 sides.

Let's write the sum of the measurement of the interior angles of the following polygons: Decagon