Triangular duoantifastegiaprism

The triangular duoantiwedge or tridafup, also known as the 3-3 duoantiwedge, is a convex scaliform polyteron and a duoantiwedge that consists of 2 triangular duoprisms and 12 triangular antifastegiums.

This polyteron also occurs as a parabidiminishing of the dodecateron.