Maybe he’s found a new angle on a parallelogram…..And it sounds like it might be right!
Who would have thought there was such possible controversy in a discussion of plane geometry?
Actually, a rectangle IS a parallelogram. Geometrically speaking, the description of a parallelogram is two pairs of equal parallel lines. It doesn’t matter if the angles are acute, obtuse, or right. Therefore, a rectangle is a parallelogram. So is a square or a rhombus. I always loved squares because they fit all five of the geometric definitions of square, rhombus, trapezoid, parallelogram, and rectangle (yes, a square is also a rectangle).
Thank you to all the Veterans who have served. SGT. D. USMC