The Shulbasutras of Baudhayana, Apastamba, Katyayana and Manava: With Text, English Translation and Commentary c8.t2.15

c8.t2.15

To construct a square equal to the difference between a smaller square *EBGF* and other square *ABCD*, the rule *Bśl.* 2.2 suggests that the rectangular portion *ABGH* is cut off by the side *BG* of the smaller square. Then the side *GH* of the cut off portion is allowed to fall on *AB*, and *P* is the point where it falls. Here *GH* = *GP*. Then *BP* is the side of a square which is equal to the difference of the squares *ABCD* and *EBGF* (Fig. 14).