sestrigintagon
A sestrigintagon is a polygon with 63 sides and 63 vertices. The term itself is derived from Latin and Greek roots, with "sesta" meaning six, "triginta" meaning thirty, and "gonia" meaning angle. Therefore, sestrigintagon literally translates to "sixty-three-angled."
In Euclidean geometry, a regular sestrigintagon has all sides of equal length and all interior angles equal.
The sum of the interior angles of any sestrigintagon, regular or irregular, is given by the formula
While theoretically possible, constructing a regular sestrigintagon with high precision using only a compass and straightedge