Final answer:
The sum of the angle measures in a pentagon is 540°.
Step-by-step explanation:
A pentagon is a polygon with five sides. The sum of the angle measures in a pentagon can be found by using the formula:
Sum of angle measures = (n - 2) * 180°
where n is the number of sides of the polygon. Substituting n = 5 into the formula, we get:
Sum of angle measures = (5 - 2) * 180° = 3 * 180° = 540°
Therefore, the correct answer is 540° (option B).