text: #pragma once
  #include "shape.h"
  
  class Triangle : public Shape
  {   
      private:
          double length;
      public:
          Triangle(const double& w = 0, const double& h = 0, const double& l = 0) : Shape(w, h), length(l) {};
          double area() const;
          Triangle operator+(const Triangle& t) const; // Option to add another triangle
  
  
  };