![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/1/12/Regular_digon_in_spherical_geometry-2.svg/640px-Regular_digon_in_spherical_geometry-2.svg.png&w=640&q=50)
Spherical lune
Area on a sphere bounded by two semicircles joined at antipodal points / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Spherical lune?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
For the plane geometry region, see Lune (geometry).
This article is about the surface. For the volume, see Spherical wedge.
In spherical geometry, a spherical lune (or biangle) is an area on a sphere bounded by two half great circles which meet at antipodal points.[1] It is an example of a digon, {2}θ, with dihedral angle θ.[2] The word "lune" derives from luna, the Latin word for Moon.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/1/12/Regular_digon_in_spherical_geometry-2.svg/640px-Regular_digon_in_spherical_geometry-2.svg.png)