If you haven't seen a hoodron, try going over to sim Clive it's the SL home from home of the Great Geometrist Wizard Gynoid.
sim Clive, we can't guarantee you this level of intimacy, but you can certainly see a
cool piece of sacred geometry, heck, you can even sit on it. (More wizardry is available for your admiration on sim Wizzy's Workshop, in IWz, definitely worth making an avie for that world, if you haven't got one yet.)
I call them hoodrons, because they always have impossible names, which may or may not be real. Only a braniac would know.
Wizzy Gynoid: This is a combination of a merkabah and a cuboctahedron, only it is tensegrity. I'm planning to make this in real life, plan to have it at Burning Man. It will be twenty feet across, made of aluminum irrigation pipe.
Just imagine that... and stop thinking about mmmmeshboobs.