Newton's Formulas
Let a Triangle have side lengths 
, 
, and 
with opposite angles 
, 
, and 
. Then
 |  |  | |
 | |  | |
 | |  |
See also Mollweide's Formulas, Triangle
References
Beyer, W. H. CRC Standard Mathematical Tables, 28th ed. Boca Raton, FL: CRC Press, p. 146, 1987.
- Small Ditrigonal Dodecicosidodecahedron
- Small Ditrigonal Icosidodecahedron
- Small Dodecacronic Hexecontahedron
- Small Dodecahemicosacron
- Small Dodecahemicosahedron
- Small Dodecahemidodecacron
- Small Dodecahemidodecahedron
- Small Dodecicosacron
- Small Dodecicosahedron
- Small Dodecicosidodecahedron
- Small Hexacronic Icositetrahedron
- Small Hexagonal Hexecontahedron
- Small Hexagrammic Hexecontahedron
- Small Icosacronic Hexecontahedron
- Small Icosicosidodecahedron
- Small Icosihemidodecacron
- Small Icosihemidodecahedron
- Small Inverted Retrosnub Icosicosidodecahedron
- Axial Vector
- Axiom
- Axiom A Diffeomorphism
- Axiom A Flow
- Axiomatic Set Theory
- Axiomatic System
- Axiom of Choice