code: def areas(self):
          
          v1 = self.points[self.simplices[:,1]] - self.points[self.simplices[:,0]]
          v2 = self.points[self.simplices[:,2]] - self.points[self.simplices[:,1]]
  
          area = 0.5*(v1[:,0]*v2[:,1] - v1[:,1]*v2[:,0])
          return area
docs: Compute the area of each triangle within the triangulation of points.
  
          Returns
          -------
           area : array of floats, shape (nt,)
              area of each triangle in self.simplices where nt
              is the number of triangles.