The Shulbasutras of Baudhayana, Apastamba, Katyayana and Manava: With Text, English Translation and Commentary c8.t2.64

The Śulbasūtras of Baudhāyana, Āpastamba, Kātyāyana and Mānava: With Text, English Translation and Commentary c8.t2.64

For, rhombus *EFHG*
= tr. *EFH* + tr. *GFH*
= ½ (rect. *ABFH* + rect. *CDHF*)
= ½ rect. *ABCD*