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polygon division problem | polygon slicing | polygon triangulation
The problem of finding in how many ways E_n a plane convex polygon of n sides can be divided into triangles by diagonals. Euler first proposed it to Christian Goldbach in 1751, and the solution is the Catalan number E_n = C_(n - 2).
Catalan number | Catalan's problem | polygon diagonal | regular polygon division by diagonals
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