code: def is_nsphere(points):
      
      center, radius, error = fit_nsphere(points)
      check = error < tol.merge
      return check
docs: Check if a list of points is an nsphere.
  
      Parameters
      -----------
      points : (n, dimension) float
        Points in space
  
      Returns
      -----------
      check : bool
        True if input points are on an nsphere