California Assessment of Student Performance and Progress (CAASPP) Math Practice Exam

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What is the sum of the interior angles of a pentagon?

360°
540°
720°
900°

The correct answer is: 540°

To determine the sum of the interior angles of a pentagon, you can use the formula for calculating the sum of interior angles of any polygon, which is given by: Sum of interior angles = (n - 2) × 180° In this formula, 'n' represents the number of sides of the polygon. For a pentagon, which has five sides, you would substitute 5 for 'n': Sum of interior angles = (5 - 2) × 180° = 3 × 180° = 540° Thus, the sum of the interior angles of a pentagon is 540°. This value reflects the total angle measure when you add all the angles inside a five-sided figure together. Understanding this concept is essential for solving problems related to polygons in geometry.