What do you remember from Geometry class? A PARALLELOGRAM is a simple quadrilateral with two pairs of parallel sides. The opposite sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure. A unique feature of this Spartan Manor is that some of the windows are parallelograms - not the typical rectangle shape. Actually, there are other geometry-inspired windows in this vintage camper. A circle window on each of the doors, and another that is almost triangular!