On angles whose squared trigonometric functions are rational

Discrete and Computational Geometry

Volumn 22, Issue 3, 1999, Pages 321-332

  Conway, J H ^a   Radin, C ^b   Sadun, L ^b  

^a PRINCETON UNIVERSITY   (United States)

^b UNIVERSITY OF TEXAS AT AUSTIN   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0033439168     PISSN: 01795376     EISSN: None     Source Type: Journal    
DOI: 10.1007/PL00009463     Document Type: Article

References (7)

1. J. H. Conway and R. K. Guy, The Book of Numbers, Copernicus, New York, 1996.
2. M.Dehn, Uber den Rauminhalt,Göttingen Nachr. Math. Phys. (1900), 345-354; Math. Ann., 55 (1902), 465-478.
3. M.Dehn, Uber den Rauminhalt,Göttingen Nachr. Math. Phys. (1900), 345-354; Math. Ann., 55 (1902), 465-478.
4. H. Pollard and H. Diamond, The Theory of Algebraic Numbers, second edition, Carus Mathematical Monographs, 9, Mathematical Association of America, Washington, DC, 1975.
5. C.-H. Sah, Hilbert's Third Problem: Scissors Congruence, Pitman, San Francisco, CA, 1979.
6. J. P. Sydler, Conditions nécessaires et suffisantes pour l'équivalence des polyèdres l'espace euclidien à trois dimensions, Comment. Math. Helv., 40 (1965), 43-80.
7. n = kπ/4, Arch. Math. Naturvid., 19 (1896).