Mathematics in Ancient and Medieval India c6.s2.12

c6.s2.12

In this connection, it is noteworthy that nothing is said about right angled triangle in the *Śulba sutra*. But the lines *pārśvamānī* (another line drawn parallel to *prācī* forming the limb of a specific figure) and *tiryaṅmānī* (a line drawn perpendicular to *prācī* as well as to *pārśvamānī* forming the limb of a specific figure) when drawn to represent the limbs of the same specific figure, it will obviously lead to the construction of a right-angle or a figure containing a right-angle. This seems to suggest that Baudhāyana and the posterior had the idea of a rightangle and right-angled figures.