About Polygon Angles

For a polygon with \( n \) sides:

• Sum of Interior Angles: \( (n - 2) \times 180^\circ \)
• Each Interior Angle (regular polygon): \( \frac{(n - 2) \times 180^\circ}{n} \)
• Each Exterior Angle (regular polygon): \( \frac{360^\circ}{n} \)

For example, a pentagon (\( n = 5 \)) has a sum of interior angles of \( (5 - 2) \times 180^\circ = 540^\circ \), each interior angle of \( 108^\circ \), and each exterior angle of \( 72^\circ \).