History of Hindu Mathematics: A Source Book v2.c17.s19.t1.49
History of Hindu Mathematics: A Source Book v2.c17.s19.t1.49
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v2.c17.s19.t1.49
Gaṇeśa (1545) shows that the quadrilateral is formed by the juxtaposition of four right triangles obtained by multiplying the sides of each of two rational right triangles by the upright and base of the other. He writes :