There's also a merger of the two on Wikipedia: http://en.wikipedia.org/wiki/File:Geometric_series_14_triangle.png http://en.wikipedia.org/wiki/File:Geometric_s

There's also a merger of the two on Wikipedia: http://en.wikipedia.org/wiki/File:Geometric_series_14_triangle.png http://en.wikipedia.org/wiki/File:Geometric_series_14_triang...