A 10 sided polygon has all its angles equal. How much is each angle?

Which is the size of one exterior angle of a regular decagon (ten - sided polygon)?

What is the fourth interior angle of the quadrilateral?

The sum of angles of a polygon is 2160^{o .}What is the sum of the angles of a polygon with one more side?

Each of the interior angles of a regular polygon is 150^o. How many sides does the polygon have?

Find the value of x.

One exterior angle of a regular polygon is  72^o. Calculate the size of each interior angle of that regular polygon.

The sum of angles of an n sided polygon is

What is the size of one interior angle of a regular twenty sided polygon?

Calculate the size of each exterior angle in the regular octagon.