What is the sum of the interior angles, each interior angle, the central angle, and each exterior angle of a pentagon, a hexagon, an octogon, a nonagon, a decagon and a dodecagon.

Sum of Interior Angles: Formula: (n-2) * 180

-Pentagon: 540 °

-Hexagon: 720 °

-Octagon: 900 °

-Nonagon: 1260 °

-Decagon: 1440 °

-Dodecagon: 1800 °

Each interior Angle: Formula: [ (n-2) * 180] / n

-Pentagon: 108°

-Hexagon: 120°

-Octagon: 135°

-Nonagon: 140°

-Decagon: 144°

-Dodecagon: 150°

The sum of the exterior angles of each polygon stated above is equal to 360 degrees. Using the formula: (180-interior angle) * n

The central angle is formed by making a circle in the middle and divide it by the number of sides. Therefore, CA = 360 / n

-Pentagon: 72°

-Hexagon: 60°

-Octagon: 45°

-Nonagon: 40°

-Decagon: 36°

-Dodecagon: 30°