kubybli lujvo

b₁=k₁ is a regular polyhedron [3-dimensional] consisting of material b₂ with surfaces/sides b₃=k₃.

b₃=k₃ sides/surfaces should include number, size, and shape. See also: blikubli, bliku, kubli.

jbovlaste

In notes:

bliku: x₁ is a block [3-dimensional shape/form] of material x₂, surfaces/sides x₃.
blikubli: k₁=b₁ is a regular polyhedron [3 dimensional] with sides/surfaces k₃=b₃.