ab$[$J points$]$ Consider the following diagram and answer the following questions.

What type of UML diagrams is this?

This diagram represents a hierarchy. Is this correct? Explain your answer.

Square and Rectangle have the same level of abstractions$.$ Is this correct? Explain your answer.

Having draw$()$ in both Triangle and Polygon is not valid. Is this correct? Explain your answer.

Having draw$()$ in both Triangle and Rectangle is not valid. Is this correct? Explain your answer.

According to the diagram, can we say that a Square $"$is$-$a$"$ Polygon?