function volume = tetrahedron01_volume ( )

%*****************************************************************************80
%
%% TETRAHEDRON01_VOLUME returns the volume of the unit tetrahedron.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    14 January 2014
%
%  Author:
%
%    John Burkardt
%
%  Parameters:
%
%    Output, real VOLUME, the volume.
%
  volume = 1.0 / 6.0;

  return
end
