Colunar Triangle
Given a Schwarz Triangle 
, replacing each Vertex with its antipodes gives the three colunarSpherical Triangles
where
See also Schwarz Triangle, Spherical Triangle
References
Coxeter, H. S. M. Regular Polytopes, 3rd ed. New York: Dover, p. 112, 1973.
- ODE
- Offset Rings
- Ogive
- Oldknow Points
- Omega Constant
- Omega Function
- Omino
- Omnific Integer
- O'Nan Group
- Onduloid
- One
- One-Form
- One-Mouth Theorem
- One-Ninth Constant
- One-to-One
- One-Way Function
- Only Critical Point in Town Test
- Onto
- Open Disk
- Open Interval
- Open Map
- Open Mapping Theorem
- Open Set
- Operad
- Operand