Check the listing for details. 3D Printed 3-color Catalan Solids. Condition: New. Listed at 75.00 USD. In mathematics, a Catalan solid, or Archimedean dual, is a dual polyhedron to an Archimedean solid. There are 13 Catalan solids. They are named for the Belgian mathematician, Eugène Catalan, who first described them in 1865. This set includes the following 3D-printed Catalan solids: Triakis tetrahedronRhombic dodecahedronTriakis octahedronTetrakis hexahedronDeltoidal icositetrahedronDisdyakis dodecahedronPentagonal icositetrahedronRhombic triacontahedronTriakis icosahedronPentakis dodecahedronDeltoidal hexecontahedronDisdyakis triacontahedronPentagonal hexecontahedron For further information on these shapes, see this article:See https://en.wikipedia.org/wiki/Catalan_solid. This listing is for the small-sized shapes, approximately 2 inches across.Please specify your choice of three colors.