The Śulba sūtras, or "Rules of the cord", are intended to lay down the rules of demarcation of various sacrificial altars, pandals and places for sacred fire. This part of Vedic culture contains unique, just about three thousand years old ritual geometry. Constructions, such as addition or subtraction of squares or area-preserving transformations of figures, are performed with the use of a rope and wooden poles. This article presents some of the geometric rules described in the mentioned texts and...