Geodesic domes are half-spheres composed out of triangles, does that help???
Except that they're not. Specifically, not just any arrangement of triangles would not necessarily be geodesic. The important thing about the design is that the struts form lines that are straight in relationship to the curved surface.
I think I like {sirzargu boldi'u} more and more. Nice, concise, and with a slightly risque metaphor.