MathDB
Area of Hexagon

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December 26, 2006
geometryanalytic geometrytrigonometrysymmetry

Problem Statement

Let A=(0,0)A=(0,0) and B=(b,2)B=(b,2) be points on the coordinate plane. Let ABCDEFABCDEF be a convex equilateral hexagon such that FAB=120,\angle FAB=120^\circ, ABDE,\overline{AB}\parallel \overline{DE}, BCEF,\overline{BC}\parallel \overline{EF,} CDFA,\overline{CD}\parallel \overline{FA}, and the y-coordinates of its vertices are distinct elements of the set {0,2,4,6,8,10}.\{0,2,4,6,8,10\}. The area of the hexagon can be written in the form mn,m\sqrt{n}, where mm and nn are positive integers and n is not divisible by the square of any prime. Find m+n.m+n.