Heavenly mathematics :the forgotten art of spherical trigonometry
Princeton
Princeton University Press
2013
xvi, 192 p., ]8[ p. col. plates : ill. )some col.(, maps ; 25 cm.
Includes bibliographical references and index
Glen Van Brummelen
Heavenly mathematics -- Exploring the sphere -- The ancient approach -- The medieval approach -- The modern approach: right-angled triangles -- The modern approach: oblique triangles -- Areas, angles, and polyhedra -- Stereographic projection -- Navigation