Final answer:
Using the law of detachment, we conclude that Polygon A, with all sides measuring 5 inches, is an equilateral polygon because all of its sides are congruent.
Step-by-step explanation:
The question revolves around the characteristics of polygons and the application of the law of detachment.
The law of detachment is a principle in logic that states: if the following two statements are true: 'If p, then q' and 'p', then we can conclude 'q'. In this case, we have two statements:
- If all sides of a polygon are congruent, then the polygon is equilateral.
- All sides of Polygon A are 5 inches.
From the information provided, we can deduce that Polygon A has congruent sides. According to the law of detachment, if a polygon is equilateral, all its sides must be of equal length.
Hence, since all sides of Polygon A are congruent, we can conclude that Polygon A is an equilateral polygon.