Establish a plane rectangular coordinate system, with the center of the regular hexagon as the origin, FC as the X axis and vertical FC as the Y axis.

Let c coordinate be (1 0), F(- 1 0), B( 1/2, √3/2), A(- 1/2, √3/2) and d (6544).

Vector BF=(-3/2, -√3/2), FD=(3/2, -√3/2),

BM= √3/3BF，FN=√3/3FD，BM=(-√3/2，- 1/2)，FN=(√3/2，- 1/2)

Get the m coordinates (1/2-√3/2, √3/2- 1/2) and the n coordinates (√3/2- 1,-1/2).

AM=( 1-√3/2，- 1/2)，AN=(√3/2- 1/2，- 1/2-√3/2)

AM=(√3- 1)/2AN, which means AMN three-point * * * line.