The sum of the measures of the interior angles of a heptagon can be calculated using the formula:
Sum = (n – 2) × 180°
where n is the number of sides of the polygon. For a heptagon, there are 7 sides, so we substitute n with 7:
Sum = (7 – 2) × 180° = 5 × 180° = 900°
Thus, the sum of the measures of the interior angles of a heptagon is 900°.