SOLID

Open Close Principle

Single Responsibility Principle

Liskov Substitution Principle

Dependency Inversion Principle

Single Responsibility Principle

Interface Segregation Principle

Open Close Principle

Dependency Inversion Principle

Single Responsibility Principle

Interface Segregation Principle

Liskov Substitution Principle

Open Close Principle

Dependency Inversion Principle

Single Responsibility Principle

Interface Segregation Principle

Liskov Substitution Principle

Open Close Principle

Dependency Inversion Principle

Open Close Principle

Interface Segregation Principle

Liskov Substitution Principle

Dependency Inversion Principle

Single Responsibility Principle

Interface Segregation Principle

Liskov Substitution Principle

Open Close Principle

Dependency Inversion Principle

Create Separate classes for Square and Rectangle with no inheritance

make Rectangle and Square siblings and introduce the interface Shape

Modifying the behavior of Rectangle to match Square by enforcing width and height must always be equal for Rectangle