Final answer:
The sum of the interior angles for any polygon is given by the formula ((n - 2) × 180) degrees, where n is the number of sides. For a three-sided figure, a triangle, it is always 180 degrees. For a polygon, the sum is 360 degrees.
Step-by-step explanation:
The sum of the interior angles of a polygon can be calculated using a simple formula, which depends on the number of sides the polygon has (n). For a triangle, or a three-sided polygon, the sum of the interior angles is always 180 degrees. The general formula for the sum of interior angles of any polygon is ((n - 2) × 180) degrees, where n is the number of sides. So, for a polygon with four sides, a quadrilateral, the sum would be (4 - 2) × 180, which equals 360 degrees. Therefore, the correct answer to the question stated in section 2.4 is option D. 360 degrees.