For a regular 30-sided polygon, what is the degree of rotation? enter your answer in the box. °

For a 30 sided regular polygon, We can divide the polygon (30 sides) into 30 inscribed triangles  with central vertex angles of = .

This central vertex angle of 12 degrees is the degree of rotation for a 30 sided polygon.

In other words, the 30 sided polygon has 12 degree rotational symmetry about the center.

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.