In the plane, a rectangle with four sides of equal length but with unequal angles (i.e., with two acute and two obtuse angles; Euc. 1, Def. 22; Censorinus, DN 83,14 Jahn). In three dimensions, a rhombus is the solid of revolution consisting of two cones with the same base (Archim. De sphaera et cylindro 1, def. 6).
Folkerts, Menso (Munich),
“Rhombus”, in:
Brill’s New Pauly, Antiquity volumes edited by: Hubert Cancik and , Helmuth Schneider, English Edition by: Christine F. Salazar, Classical Tradition volumes edited by: Manfred Landfester, English Edition by: Francis G. Gentry.
Consulted online on 28 March 2024 <http://dx.doi.org/10.1163/1574-9347_bnp_e1022960>