A hosohedron is a regular tiling or map on a sphere composed of 
digons or spherical
lunes, all with the same two vertices and the same vertex angles, 
. Its Schläfli symbol
is 
. Its dual is the dihedron 
.
Hosohedron
See also
Digon, Dihedron, Spherical LuneExplore with Wolfram|Alpha
References
Coxeter, H. S. M. Regular Polytopes, 3rd ed. New York: Dover, p. 12, 1973.Referenced on Wolfram|Alpha
HosohedronCite this as:
Weisstein, Eric W. "Hosohedron." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Hosohedron.html