Triangular Cupola

$\begin{figure}\BoxedEPSF{J03_net.epsf scaled 500}\end{figure}$

Johnson Solid $J_{3}$ . The bottom six Vertices are

$\begin{displaymath} (\pm{\textstyle{1\over 2}}\sqrt{3}, \pm{\textstyle{1\over 2}}, 0), (0, \pm 1, 0), \end{displaymath}$

and the top three Vertices are

$\begin{displaymath} \left({{1\over\sqrt{3}}, 0, \sqrt{2\over 3}}\right), -\left({{1\over 2\sqrt{3}}, \pm {1\over 2}, \sqrt{2\over 3}\,}\right). \end{displaymath}$

See also Johnson Solid