Geometry Problem 973: Three Parallel,
Square, Vertices, Distance Between Two Parallel Lines,
Side, Metric Relations. Level: School, College, Mathematics
Education
Lines L1, L2, and L3 are parallel
(Figure below) with line EFG perpendicular to L3.
ABCD is a square with A, B, and D on, L3, L1,
and L2, respectively. If EF = 3 and FG =2, find the
side of the square.