Well … assuming that a Dome is a convex Topology due to a collection of connected straight edges in triangles or quads (BTW: I would strongly advise to play with Bono’s stuff):
Some popular domes are based on an icosahedron, where the triangular faces are subdivided into smaller triangles. An icosahedron has twenty faces , each of which is an equilateral triangle and therefore … blah, blah.
That said Domes are divided in classes known as 1V, 2V, 3V, 4V …
A 1V Dome has fewer triangles, uses only one size triangle in its simple pattern meaning that it less closely approximates portions of a sphere ( hemisphere or other). A 6V Dome has many triangles of multiple sizes that are arranged in a complex (more or less) pattern to create a more smooth and spherical shape.
