Explanation:
5.1: Based on the information provided, I don't have enough details to determine the name of the polygon. If you can provide more information about the polygon, such as the number of sides or any other characteristics, I would be happy to help you identify it.
5.2: To calculate the size of each interior angle in a polygon, we can use the formula:
Interior Angle = (n-2) * 180 / n
Where 'n' represents the number of sides in the polygon. Since I don't have the number of sides for the given polygon, I'm unable to calculate the size of each interior angle.
5.3: The sum of the interior angles of a polygon can be calculated using the formula:
Sum of Interior Angles = (n-2) * 180
Again, without knowing the number of sides in the polygon, I can't determine the sum of its interior angles. If you can provide more information, I'll be able to assist you further.