shape.rb

class Shape
  def click
    p rotate
    play
  end

  def play
    sound
  end

  def rotate
    "Rotating #{self} 360 degrees"
  end
end


class Square < Shape
  def sound
    "bing"
  end
end


class Triangle < Shape
  def sound
    "bang"
  end
end

class Circle < Shape
  def sound
    "boom"
  end
end


p s = Square.new.click
p t = Triangle.new.click
p c = Circle.new.click