Sum of interior angles of polygon

The sum of interior angles of a polygon of n sides is __________right angles.

Draw any polygon and divide it into triangular parts. Work out the sum of interior angles of the polygon.

The sum of interior angles of a triangle is 180^(@) . Show that the sum of the interior angles of polygons with 3,4,5,6…..sides form an arithmetic progression. Find the sum of the interior angles for a 21 sided polygon.

We know that the sum of the interior angles of a triangle is 180^0 . Show that the sums of the interior angles of polygons with 3,4,5,6 sides form an arithmetic progression. Find the sum of the interior angles of a 21 sided polygon.

We know that the sum of the interior angles of a triangle is 180^0 . Show that the sums of eth interior angles of polygons with 3,4,5,6, sides for an arithmetic progression. Find the sum of the interior angles of or a 21 sided polygon.

We know that the sum of the interior angles of a triangle is 180^(@). Show that the sums of the interior angles of polygons with 3,4,5,6 sides form an arithmetic progression.Find the sum of the interior angles of a 21 sided polygon.

Find the sum of the interior angles of a polygon of 8 sides.

The sum of all interior angles of a polygon is 1440^(@) . The number of sides of the polygon is