### Instruction: What is the degree measure of an interior angle of a regular pentagon?### Response: I know that a regular pentagon is a polygon with five congruent sides and angles.
I also know that the sum of the interior angles of any polygon with n sides is given by the formula (n - 2) * 180 degrees.
So, for a regular pentagon, n = 5, and the sum of the interior angles is (5 - 2) * 180 = 3 * 180 = 540 degrees.
Since the pentagon is regular, all five interior angles are equal, so I can divide the total sum by 5 to get the measure of one angle.
That means each interior angle of a regular pentagon measures 540 / 5 = 108 degrees.