I felt compelled to fact check this, and I'm afraid you're wrong:
"Square
Regular quadrilateral
In geometry, a square is a regular quadrilateral, which means that it has four straight sides of equal length and four equal angles. Squares are special cases of rectangles, which have four equal angles, and of rhombuses, which have four equal sides. As with all rectangles, a square's angles are right angles, making adjacent sides perpendicular. Wikipedia"
Which is a shame, as I was about to open FreeCAD to see if I could draw it, then try the same in Inkscape, as drawing arcs of a set length is something useful I haven't tried yet
