The definition I just now found online for a rectangle is:
A quadrilateral with four right angles.
To me, it seems that squares and rhombuses can fit that definition,
if they want to, but don't necessarily have to.
Chat with our AI personalities
No, a rectangle cannot ever be a rhumbus - nor a rhombus (to give its correct selling).
A typographic error will make a rhombus into a rhumbus.
A rhumbus?
rhumbus
Three rhombi can make a long parallelogram.