For these pages, a "geodesic rhombic triacontahedron" is a polyhedron derived
from a Rhombic Triacontahedron by
subdividing each face into smaller faces using an appropriately shear-mapped
square grid,
and then applying a canonicalization algorithm
[1]
to make the result more spherical.
The procedure is analogous to the way a
geodesic cube is derived from a cube.