The common decagon will be the Petrie polygon from the normal dodecahedron and icosahedron, and it's the biggest face that an Archimedean good can comprise, as with the truncated dodecahedron as well as truncated icosidodecahedron. The decagon will be the hemi-face of the icosidodecahedron, such that a plane dissection yields https://crithitceramics.com/product-category/fusion-sets/