Exercises

Create the following protocols to solve the problem explained in Chapter 1, Objects from the Real World to Playground:

• AbstractShape

• AbstractRegularPolygon

• AbstractEllipse

• AbstractRectangle

• AbstractCircle

After you create the protocols, create the classes that implement them based on the specifications explained in Chapter 1, Objects from the Real World to Playground.

The following table summarizes the list of protocols to which each of the classes you must create will conform:

Class name	Conforms to the following protocol(s)
Shape	AbstractShape
Rectangle	AbstractRectangle and AbstractShape
RegularPolygon	AbstractRegularPolygon and AbstractShape
Ellipse	AbstractEllipse and AbstractShape
Circle	AbstractCircle and AbstractShape
EquilateralTriangle	AbstractRegularPolygon and AbstractShape
Square	AbstractRegularPolygon and AbstractShape
RegularHexagon	AbstractRegularPolygon and AbstractShape