Two not inapt terms are used in this edition to
describe the figures of III. 7, 8, the former of which is called the
goose's foot (pes anseris),
the second the peacock's tail (cauda pavonis).
The Thirteen Books of Euclid's Elements translated from the text of Heiberg
with introduction and commentary by Sir Thomas L. Heath,
Cambridge, University Press, 1926.
