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IMO Longlists
1983 IMO Longlists
64
64
Part of
1983 IMO Longlists
Problems
(1)
Find the sum of all of the face angles of the polyhedron
Source:
10/7/2010
The sum of all the face angles about all of the vertices except one of a given polyhedron is
5160
5160
5160
. Find the sum of all of the face angles of the polyhedron.