Answer:3. Pentagon (five-sided polygon). The measure of each included angle is 108°.4. Hexagon (polygon with six sides). The measure of each included angle of a regularhexagon is 120°. 5. Heptagon (a polygon with seven sides). The measure of each angle is approximately equal to 128.56°.6. Octagon (a polygon with eight sides). The measure of each angle is 135°.7. Nonagon (a polygon with nine sides). The measure of each angle is 140°. 8. Decagon (a polygon with ten sides). The measure of each angle is 144°