What is the extorior angle of a icosagon?

An icosagon is a polygon with 20 sides. The measure of each exterior angle of a regular icosagon can be calculated using the formula ( \frac{360°}{n} ), where ( n ) is the number of sides. For an icosagon, this results in each exterior angle being ( \frac{360°}{20} = 18° ). Therefore, each exterior angle of a regular icosagon is 18 degrees.